Porsche 911 Modified

The vehicle in detail

Porsche’s air-cooled era came to a close with the 993-generation 911, launched in 1994 and built through spring 1998. All agree that the Stuttgart automaker concluded this chapter on a high note: The 993 blended the best of classic Porsche styling and engineering, modernizing the look, feel, and performance of the 911 without losing its timeless character. As versatile as it was capable, the 993 could serve as a well-balanced roadgoing sports car, a ferocious competitor across multiple motor sports disciplines—or a machine that walked the line between the two.
The starting point for this special 993 build is a US-market 911 Carrera 4 Coupe, completed in February 1995 and factory-finished in Speed Yellow over a Black interior. At its heart sits a Rothsport-built 3.9-liter race engine. Founded by Jeff Gamroth in 1988, Oregon-based Rothsport Racing is renowned for its air-cooled engines—the company supplies its highly refined powerplants to some of today’s best-known Porsche restorers and upfitters—and its expertise extends to production of specialty components, racecar preparation, and more.
Completed in 2012 at a cost of over $68,000, this Rothsport engine incorporates a 964-type crankshaft, Omega pistons, and Pauter con rods. Rothsport custom headers and a GT3 muffler have been fitted, as well as a Rothsport billet slide throttle set with a GT3 resonant plenum. Dyno sheets on file show a peak output of over 412 horsepower and 317 pounds-feet of torque, all controlled via a six-speed manual gearbox. Rennsport Systems of Portland, Oregon, supplied an upgraded braking system, which uses 993-generation 911 Turbo front and rear rotors, Turbo front calipers, and RS rear calipers. A roll cage, as well as a Moton Suspension adjustable damper system, hint at the 911’s track day intent.
Under current ownership, a new interior with tartan-trimmed Recaro racing seats and thoughtful details, including RS-style door pulls, was installed by McFarland’s Custom Upholstery of Fife, Washington, in 2023 at a cost of over $50,500. J-Rod & Custom of Auburn, Washington, supplied further cosmetic and electrical work. In total, over $130,000 has been invested in this Porsche since 2012, as illustrated by invoices on file.
The result is a fitting representation of the 911’s final air-cooled generation: A Rothsport-powered, track-capable coupe with just the right amount of “outlaw” flair to no doubt make an impression wherever it goes.