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Porsche 911 Backdate

Porsche 911 Backdate

Targa, 1990


  • Top Quality hand crafted Backdating project
  • ST Body
  • 964 Carrera 4 Targa base car

Amazing 911 Targa Backdating “Slate Grey” manufactured by Julià 911 on the basis of a 964 Carrera 4 Targa from 1990.

Since its complete restoration and modification, it has barely driven just over 5,000km.

At Julià 911 we have been carrying out Backdating projects since 2006. If you are interested in carrying out a similar custom-made project, do not hesitate to contact us.

Photos courtesy of 9ONCE Plus magazine and Gauvin Pictures (

Price: on application


Julià 911 - Porsche Specialist
C/ Enriqueta Pujal 10
08390 Montgat (Barcelona)
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The vehicle in detail

Our 911 Backdating are all made to order, so this is a great opportunity to acquire one of our already completed projects, without the need to wait the almost 12 months it takes to carry out a project of this type. Our Backdating projects are based on the 911 Carrera 3.2, on the 964 and on the 993. For this project, its owner chose the 964 because it offers the best compromise between pure sensations and modernity. It is a vehicle that, although it inherits many features of the previous classic 911, already offers more modern details. Elements such as power steering, air conditioning, ABS or a more modern suspension system are standard on most versions. But at the same time, it still retains that purity of lines and driving sensations, which make it a very attractive generation. Additionally, for this project, the Targa body was chosen, one of the most requested for Backdating projects. In the 964 they are quite exclusive units for being a model with a very low production. In 1990, the year of this unit, only 322 units were manufactured for Europe, counting both Carrera 2 and Carrera 4 models.

Its bodywork is ST type, due to its wider wheel arches and aesthetically it presents a Sport-type finish with a front spoiler. For the exterior color, the legendary Porsche Slate Gray color was considered, a color that combines perfectly with the brown leather / braided leather of the interior and of the Recaro-type seats of the time.

The 6-cylinder boxer engine has been toned up using a Mahle Motorsport engine kit, which increases displacement from the original 3.6-litres to 3.8-litres. With this engine kit the compression becomes 11.8:1, instead of the original 11.3:1. It has also been fitted with a Sport camshaft, a type 993 flow meter, a sports exhaust system with Sport catalytic converters, an additional oil cooler at the front and finally, a reprogramming of the control unit. The result is an approximate final power of 330cv.

On a dynamic level, in the 964 generation, 4-wheel drive has already arrived and they offer better traction in curves and on asphalt with little grip, providing a lot of confidence and safety in any situation. Additionally, its chassis is optimized thanks to the use of a Bilstein PSS 10 suspension (adjustable height and stiffness), a Sport stabilizer bar system and Michelin Pilot Sport tires with 7×17 and 9×17 Fuchs-type rims.

Project description:

• Base Model: 964 Carrera 4 Targa
• Model Year: 1990
• Exterior Color: Slate Gray
• Inner color: Brown
• Displacement: 3,800cc
• Box type: G64/00
• Power: 330hp

Main features of the bodywork:
. ST Body
. Sport finish
. front spoiler

Main features of the interior:
. Leather/braided leather interior
. MOMO Prototype steering wheel
. Pre-67 911 Screen Printed Watches
. Radio Porsche Classic

Main features of the engine:
. Mahle Motorsport 3.8 Engine kit
. Camshafts Sport
. Type 993 Flowmeter
. Switchboard Reprogramming
. Sport exhaust system with Sport catalysts
. Additional oil cooler at the front

Main characteristics of the chassis:
. Bilstein PSS 10 suspension (adjustable height and stiffness)
. Sport stabilizer bar system
. Fuchs rim 7×17 and 9×17
. Michelin Pilot Sport tire

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Year of construction: 1990
Initial registration date: April 1990
Model: 911 Backdate
Body: Targa
Series: 911 Backdate/Modified
Mileage: 5197 km
Power: 330 HP
Cylinder capacity: 3.8 Liter
Steering: left
Transmission: Manual
Drive: Four-wheel drive
Fuel: Gasoline
Configuration: ABS Servo steering Navigation system Air conditioning
Interior color: Brown
Interior material: Leather
Exterior color: Grey
Manufacturer color code (exterior): Slate Grey
Condition: Fully restored Accident-free
New / used: Used car
Ready to drive: yes
Registered: yes

More information

Elferspot magazine Porsche Backdate/Modified

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Porsche 911 Backdate

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