C3 is pleased to offer one of the most engaging and aesthetically appealing air-cooled 911’s we’ve ever worked with. This 1991 Porsche 911 (964) Carrera 4 Coupe is featured in Black Metallic over Black leather interior with upgraded interior components throughout. Having previously undergone a comprehensive RS-Style build by a renowned Porsche specialist while in the Netherlands, the engine was enhanced from the factory 3.6L to a stout 3.8L using lightweight components, reportedly achieving RSR-specification. The 3.8L engine, mated to its numbers matching, G50 5-speed manual transmission operates flawlessly throughout the RPM range delivering raw, unadulterated linear power. 

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The build incorporates a set of 18” BBS E88 wheels, a 991 GT3 center-mounted exhaust system, Recaro Sportster CS seats, a MOMO steering wheel, Rennline interior appointments, Steve Wong engine tuning, 103mm cylinder case and pistons, 964 RS camshafts, a Sachs clutch kit, Fabspeed headers, a rebuilt G50 5-speed manual transmission and much more. Originally delivered in Germany and imported to the United States in 2024, this tastefully appointed 964 Carrera 4 now shows approximately 251k kilometers or 156k miles showing on the odometer.

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The C4 also received a professional glass-out refinish in its factory-specified shade of Black Metallic (Z8). Exterior modifications include RS-style aero side mirrors, RS-style front bumper air ducts, deletion of the bumperettes to European specification, and a 991 GT3-derived center-exit exhaust system. It rides on gold-finished 18” BBS E88 five-lug wheels with polished outer lips and Hankook Ventus V12 tires measuring 225/40 up front and 265/35 in the rear.

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The black leather interior presents Recaro Sportster CS seats and a MOMO MOD07 deep-concave steering wheel. Additional enhancements include a Function First black anodized shift knob and Rennline interior trim components such as black anodized perforated door handles, an anodized ignition bezel, and a matte black phone mount. A Porsche Classic Communication Management (PCCM) radio system with Apple CarPlay and Bluetooth connectivity has also been fitted.

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The car’s original air-cooled flat-six engine has been enlarged to 3.8 liters and delivers power to all four wheels through its numbers-matching, rebuilt 5-speed G50 manual transmission. The engine build was reportedly completed in May 2009 by a reputable air-cooled specialist in the Netherlands and features 103mm cylinder cases and pistons, 964 RS camshafts, and a Steve Wong ECU tune. A major service was performed in the Netherlands in 2022, which included new timing covers, cam seals, valve cover gaskets, a new SACHS clutch kit, and an alternator/fan belt. The CCU unit was also rebuilt and is said to provide ice-cold air conditioning. Upon the car’s importation to the U.S. in December 2024, additional maintenance included a new valve cover gasket set, timing chain cover set, O-ring seals, spark plugs, fuel filter, alternator and fan belts, intake sleeve boots, air filter, battery, and an oil change. Lammertink coilovers, a new Sachs clutch kit, and a performance 991 GT3 center-exit exhaust and Fabspeed RSR headers were also installed. 

 

A leak-down test was performed prior to the current owner’s purchase and shows consistent values across all 6 cylinders.

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•    Cylinder 1 - 195 PSI / 5%
•    Cylinder 2 - 190 PSI / 6%
•    Cylinder 3 - 190 PSI / 6%
•    Cylinder 4 - 200 PSI / 4%
•    Cylinder 5 - 195 PSI / 5%
•    Cylinder 6 - 200 PSI / 4%

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The original Netherlands title, invoices & maintenance records along with a fully detailed excel sheet of the build by Modifica Classica (including all restoration and modifications that were performed at that time) will be included with the car. The original Dutch documentation from the previous owner regarding the 3.8L piston and cylinder conversion on this 1991 964 Carrera 4 will be included in a binder outlining this wonderful example’s history. Having been maintained locally by a highly reputed independent Porsche specialty shop, this 964 is ready to be properly enjoyed by its next caretaker.