Porsche 911 Backdate

Porsche 911 Backdate

Targa, 1991


  • Rare 964 Targa RESTOMOD from German manufacturer
  • Dismantling by hand on the F model
  • Racing engine with 3.8l displacement

Unique in color & design, exclusivity at the highest level, driving dynamics & technology “state of the art”.
Dear interested parties and Porsche enthusiasts,
We are very pleased to present an absolutely unique piece in color, equipment combination, “understatement” & “performance” – coupled with incomparable driving pleasure.
Porsche 911 964 Targa RESTOMOD (F model)

Translated by Google Translate

Please mention Elferspot when calling Andreas Wisak.

The vehicle in detail

This vehicle was meticulously handcrafted by an exclusive German manufacturer in compliance with current European safety and quality standards in 2017/18.
Specifically, only original Porsche parts were used for the conversion in order to maintain the authenticity of the brand through the dismantling.
A delivery rate to date of around 20 units worldwide (1-2 vehicles per year), a high level of vertical integration and attention to detail make this vehicle undoubtedly unique in the 911 world.
Rebuilt from the ground up according to the original owner's individual ideas (first Austrian registration in 2018) using vehicle parts from the older vehicle model (F model), a dream has become reality that is unparalleled on the market.

Based on the available material value report (drawn up when it was first delivered on July 30, 2018), the vehicle was completely dismantled and the body was modified accordingly with front and rear parts from the 911 F model (built in 1970/1971). After consultation with the manufacturer (OM-Automobile GmbH), over 3000 hours of work were invested. After the body work was completed, the vehicle was completely repainted, professionally and without any complaints from the expert.
In addition to the color/engine combination, the vehicle offers current technology in a historical design. ABS, air conditioning, power steering, Porsche navigation, alarm system, 3-component audio system and electrically adjustable seats are just an excerpt of the modernization of the vehicle.
From a collection, the vehicle was regularly driven in the summer and serviced accordingly by Porsche (two original invoices are available). With a current mileage of 8,976, the vehicle can be described as technically and visually new and in perfect condition.
A viewing and test drive is possible at any time by appointment.
We are looking forward to your contact!
Wisak family

Information about the vehicle

  • Body type: Targa
  • Make: Porsche
  • Type: 964 Individual conversion to Type 911 F model
  • Second delivery: 07.2018 (0 tkm)
  • Color gray
  • Engine type: Otto
  • Cylinder: 6
  • Displacement: 3800 cc
  • Power approx.: 300-330 HP
  • Front tires: 205/55 ZR 16
  • Rear tires: 245/45 ZR 16
  • Make: Continental
  • Tread depth: 8/8/8/8


  • Special conversion of the body to turbo extension using original Porsche Turbo body parts
  • Modification of the optics
  • Front and rear for year 1971 to 1972 (F model) add-on parts, chrome parts, targa bar brushed stainless steel
  • Analog lighting unit built in 1971

landing gear

  • Standard chassis 964 Targa with spacers
  • Track widening
  • Damper and chassis completely new
  • All bushings and bearings have been replaced
  • Fuchs aluminum rims, highly polished, 7″ at the front and 9″ at the rear

Brake system

  • Brake system 964 with ABS
  • Brake system completely overhauled


  • 5-speed manual transmission, completely overhauled with new clutch


  • Complete engine overhaul, using the 3.8 liter MahIe pistons, with cylinder kits
  • Power approx. 300-330 HP
  • Motronic adjustment
  • 2 Wegerenn catalytic converters from Cargraphic with 100 cells

Interior fittings

  • Custom-made – instruments with a green background, chrome rings from model 356
  • Chrome strips with leather inserts in the dashboard
  • Custom-made door panels
  • Opening loops 964 RS
  • Handles 356 Speedster door pockets from model 356
  • S sports seats electrically adjustable, reupholstered in leather
  • Color brown braided scar custom-made
  • Carpets hair yarn “Boucle” analogous to Porsche 356 with leather edging
  • Trunk lining leather quilted fawn brown
  • Insulation engine compartment leather quilted fawn brown
  • Porsche Classic Navigation with CD drive and USB port
  • Sound system with subwoofer – concealed
  • Porsche RS leather steering wheel, dished with raised hub


  • Color glazing
  • Anti-theft alarm system
  • Tachometer up to 7000 rpm
  • Electrical system 12 volts
  • Electric window lifts
  • Windshield tinted
  • Speed display up to 300 km/h,
  • Interior decoration: leather braid hub
  • Oil pressure gauge
  • Oil temperature gauge
  • Upholstery: fawn brown leather
  • Radio/CD, radio navigation
  • Power steering
  • Electric seat adjustments
  • Sports seats
  • Sports exhaust system
  • Tailpipe modified to look like F model
  • Cruise control
  • Windshield with antenna
  • Air conditioning automatically
  • Limited slip differential

Paint layer thickness measurement 

  • Front cover: 460 pm to 700 pm / steel
  • Front right fender: 120 pm to 400 pm / steel
  • Right front door: 430 pm to 700 pm / steel
  • Rear right side wall: 250 pm to 680 pm / steel
  • Trunk lid: 500 pm to 650 pm / steel
  • Rear left side panel: 100 pm to 560 pm / steel
  • Left front door: 420 pm to 600 pm / steel
  • Front left fender: 150 pm to 480 pm / steel
Continue reading


Year of construction: 1991
Initial registration date: January 1991
Model: 911 Backdate
Body: Targa
Series: 911 Backdate/Modified
Mileage: 8976 km
Power: 300 HP
Cylinder capacity: 3.8 Liter
Consumption: 12 Liter/100km
Steering: left
Transmission: Manual
Drive: Rear drive
Fuel: Gasoline
License documents (Click to open): Gutachten_Porsche-911-964-Restomod.pdf
Configuration: ABS Servo steering Navigation system Air conditioning
Interior color: Brown
Interior material: Leather
Exterior color: Grey
Matching numbers: yes
Vehicle inspection valid until: January 2024
Condition: Fully restored Accident-free
New / used: Used car
Ready to drive: yes
Country of first delivery: Austria
Number of vehicle owners: 5

More information

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Porsche 911 Backdate

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