Porsche 911 Backdate

Porsche 911 Backdate

Coupé, 1989


  • Individually made
  • Made in Germany
  • Base on 964 series

Porsche GS 964 prototype . The vehicle shown and described here is an unsaleable prototype. The vehicle serves as a reference and sample for vehicles made to customer specifications.

The pleasure of driving a Porsche means having the "GS 964" an intimate experience. The limits of physics and the limits of your driving skills are not limited here.

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Please mention Elferspot when calling Autohaus Stefan & GS Manufaktur ®.

The vehicle in detail

This fun remains with you in all its dynamics.

A "GS 964" is more than just a vehicle, it is an expression of freedom and a way of life that knows how to enjoy. When it comes to enjoyment, your sanity is also in demand, because the "GS 964" leaves only the decision for the right measure.

Here you can still hear what sound is called. And this sound is not chip-controlled. The GS manufactory preserves the typical Porsche sound that still comes out of the machine.

The increase in engine power, chassis modifications, reduced overall weight and the use of carbon, specially designed for F-model body panels


The further development of the Type 911 (built until 1988) for Type 964 is a quantum leap.

The base vehicle Porsche Type 964, C2, unladen weight: 1350 kg

The base vehicle Porsche Type 964, C4, four-wheel, curb weight: 1450 kg

Both types have the revised underbody with McPherson struts forward, rear adjustable coil springs and ABS, power steering, air conditioning, airbag and brake booster. No regulations.

The built-in technology is particularly well suited for an unregulated, pure driving pleasure. Through our modification of the body, exhaust system, suspension tuning and many assemblies as well as the increase in power of the engine multiplies the driving pleasure.

The 964 C2 only with rear-wheel drive is about 100 kg lighter. Our recommendation: The 964 C4 with four-wheel drive offers an even greater driving experience in the bends.

Our Carbon F-Modell design is also suitable as a basis for the 993.

However, we believe that the rear axle developed and built for the 993 destroys too much driving pleasure.

The GS manufactory gladly and committed to customer requests.

Each "GS 964" is an independent, mechanical, perfect masterpiece.

You decide individually:

  • the power of the engine
  • the sound of the engine
  • the brake system (original installed or modified)
  • the chassis (hard or medium to gentle)
  • the interior in color and materia
  • the exterior paint.

Please contact us for detailed questions!

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Year of construction: 1989
Model: 911 Backdate
Body: Coupé
Series: 911 Backdate/Modified
Mileage: 1000 km
Power: 300 HP
Cylinder capacity: 3,6 Liter
Steering: left
Transmission: Manual
Drive: Four-wheel drive
Fuel: Gasoline
Configuration: Servo steering
Interior color: Brown
Interior material: Leather
Exterior color: Blue
Manufacturer color code (exterior): Ätnabalu
Condition: Fully restored
New / used: Used car
Ready to drive: yes
Country of first delivery: Germany
Car location: DEGermany

More information

Interested? Contact the seller!

Car inquiry


Philipp Göller

Philipp Göller from Autohaus Stefan & GS Manufaktur ® looks forward to your questions and is happy to help you.

Porsche 911 Backdate

Price: on application

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