Extra cross bracing was employed for increased stiffness, distinctive red-painted brake calipers peeking out from behind eye-popping 18-inch three-piece magnesium wheels. Although Porsche played down the level of development between the 3.6 and 3.8-litre engines, there were a variety of important developments made. The Typ M64/04 engines featured a new crankcase, new matched cylinders and pistons, larger valves and new inlet and exhaust manifolds. Displacement was up by 146cc to 3746cc, this thanks to a bore and stroke of 102 x 76.4mm (the former having been stretched from 100mm). With compression upped from 11.3 to 11.6:1 and new Bosch Motronic 2.10 engine management, output was 305bhp at 6500rpm. To accomodate the wider 9 and 11-inch wheels front / rear, a seam-welded Turbo bodyshell was used, this being adorned with a huge adjustable dual plane rear wing and jutting matt black chin spoiler. Inside, the seats, glass, electric windows, door trim, sound insulation, central locking and alarm were all discarded. In their place, Porsche installed a pair of fire-proof Recaro bucket seats, thin carpet trim and fabric looped door pulls.

Weighing in at 1140kg, the 3.8 RS was able to reach a top speed of 171mph whilst 0-60 took just 4.8 seconds. If this wasn't hardcore enough though, for a 5% premium, customers were able to go a stage further and specify the desirable Club Sport pack. This included a roll cage, six-point harnesses, a fire-extinguishing system, competition brake pads and a lightened clutch plate. Exactly how many 3.8's were completed as Club Sport's is unclear, however, with only 55 of these spectacular race-bred brutes manufactured in total, expected it to be about half.