Porsche 911 Modified

Porsche 911 Modified

Coupé, 1978


  • Fully restored
  • Acid dipped
  • KTL (cathodic dip coating)

Not all cars are built equal. Sometimes you drive a car and you can instantly feel it. That thing, that makes it different, better and special. Built in 2016 by a very skilled mechanic for himself as a racecar for the road. This 1978 Carrera 3.0 IROC Tribute is such a car.

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The vehicle in detail

The Alpine Racecar

Without knowing much about the car, Steffen the owner, handed me the keys and I set of into the alps. From Stuttgart to Zell am See mostly on motorways the ride quality was soft enough to enjoy the time behind the wheel and the meaty Michelin TB15 race tires worked out well. From there I headed on the legendary Großglockner and Nöckalmstrasse and here the car started to shine! The IROC turned sharp and precise in on every corner gripped hard like chewing gum on the asphalt. Never have I driven an old 911 that felt this stiff, no flex on the chassis but with a lot of finesse on the suspension to keep the car firmly on the road no matter how much speed you try to carry into and out of a corner.

That evening I called up Steffen and shared my adventure and thoughts about the car. Only then he confessed that he seam welded every panel on the car over the factory spot welds. Even though this takes mind bending time and patience it has paid of big time and explains the incredible refinement this IROC Tribute has to offer.

The other remarkable and possible most charming thing he made to the car was to paint strip it in an immersion bath and then have it cathodic dip coated, but instead of the standard black KTL bath the car was dipped at a planed that had specific John Deere green on side. Mind you the car was intended for himself and not build for a client. So, any way to keep the cost down was welcome. Today the Green vinyl “Carrera” script on the car is, to me at least, is a small tribute to that feat.

Spec wise the car has it all:

  • 1978 Carrera 3.0 – IROC Tribute
  • Vehicle had 4 previous owners
  • Bought in August 2012 with approx. 43.000 km on the speedometer (read off).
  • In March 2016 then started with the conversion
  • Porsche 911 SC conversion to 74 RS clone IROC
  • Body completely stripped in dip bath, KTL coated and painted in slate gray 6401
  • fenders widened with sheet metal
  • Front and rear spoiler
  • Front oil cooler with oil cooler middle
  • Roll cage Matter
  • Suspension overhauled and powder coated
  • Rubber bushings wishbones and rear control arms reinforced sport version
  • Turbo track rods and ball joint (more camber possible)
  • Bilstein Suspension Nordschleifen adjustment
  • Adjustable stabilizers front and rear axle
  • 9+11×15 ” Maxilite alloy wheels
  • Michelin racing tires TB15 18/60×15 and 26/61×15
  • equal length headers with dual-pipe sport exhaust
  • short shifter
  • RS door panels and RS carpet
  • RS seats Rally St GTR70 with harness straps
  • Steel braided brake lines
  • Momo sport steering wheel
  • Pedal set and footrest
  • Engine overhauled at approx 41.000km doing bearings, pistons and cylinders,
  • Hydraulic chain tensioner, cylinder heads overhauled with new valves,
  • valve springs, valve guides and seats, connecting rods angled and
  • Crankshaft measured and polished
  • Gearbox bearings and synchronizer rings renewed at about 48.000 km
  • The car currently has 51.000 km on the clock.
  • Features the IX XI Parabellum Bullet Mirrors in black
  • IX XI – 917 Tribute Shifter Knob
  • IX XI – Leather Fuel Bib
  • And a smell less aluminium “little tree” 😉


A lot of care and countless hours went into this beauty and now it could be yours.

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Year of construction: 1978
Initial registration date: May 1978
Model: 911 Modified
VIN: 9118302017
Body: Coupé
Series: 911 Backdate/Modified
Mileage: 53000 km
Power: 180 HP
Cylinder capacity: 3,0 Liter
Steering: left
Transmission: Manual
Drive: Rear drive
Fuel: Gasoline
Interior color: Black
Interior material: Fabric/Leather combination
Exterior color: Grey
Manufacturer color code (exterior): Slate Gray 6401
Matching numbers: yes
Condition: Fully restored Accident-free
New / used: Used car
Ready to drive: yes
Registered: yes
Country of first delivery: Germany
Number of vehicle owners: 4
Car location: DEGermany

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