Now available for auction is this Porsche 993-based 911 GT1 tribute race car. Built on a custom tubular frame with fiberglass replica bodywork, this GT1 tribute was designed for unadulterated track-oriented performance with its center-seat configuration, 3.6 L flat-six engine and 993-derived suspension setup. With over $175k invested in the build, this GT1 weighs in at approximately 1,775 lbs. and is legal for all PCA club racing as it uses the serial numbered tub from a 1973 Porsche 914. Bearing approximately 25 hours of run time on the chassis and even less on the drivetrain, this GT1 tribute is now being offered for auction in race-ready condition by its seller and builder in Fallbrook, California.
Extending from its 914 tub, the tubular frame has been dressed in replica 993 GT1 body panels custom made by QRS Fiberglass. A red fiberglass gel coat was applied instead of paint for weight savings, and a custom rear wing was fabricated after being scaled up directly from a model of the real car. The bodywork is said to weigh 110 lbs. and the car measures 37″ in height, which is 2.5″ shorter than the actual 993 GT1. This tribute sits low on 16” 3-piece BBS wheels measuring 11.5” wide in the front and 14” wide in the rear. The sale will also include skinny wheels for transport as well as a spare GT1 body kit in white (images are provided in the photo gallery).
Inside, the driver is situated in a chassis-mounted Porsche RSR lollipop racing seat which is located in the center of the car for optimal weight distribution. Track-oriented features include a 6-point Schroth harness, a Momo quick-release steering wheel, PI Club Expert digital dash, Tilton pedals with brake-bias adjuster and a fire suppression system with a new tank. A full roll cage is also installed which is constructed from 1.5″ DOM tubing with .120″ wall thickness. A video of the switch panel and digital dash operation is provided in the gallery.
Power comes from an air-cooled Porsche 993 3.6 L flat-six engine which is mated to a Hewland DG300 5-speed manual transmission. Rebuilt in 2005 with approximately 5 hours driven since, this robust gearbox features straight-cut gears, a heavy-duty clutch and limited slip differential. This car rides on 993-based front and rear suspension with RSR-spec Bilstein struts and mono-ball spherical bushings. A new custom fuel cell was installed in 2019, and the 993 engine is said to have been installed at 30k miles with approximately 10 hours of run time added since. This GT1 is said to be highly competitive while remaining in excellent running order. The most recent compression and leak down test also yielded the following results:
The sale of this tribute will include service records, an extra body kit and wheelset, special gearbox fluid, racing logbooks and a featured 1998 Excellence article. For any avid track enthusiast who has always admired the legendary 911 GT1, this nicely executed 993-based tribute offers a very unique opportunity.