Porsche 964 - 993 Carrera 4.1 liter conversion kit with crankshaft, special connecting rod, 104 mm piston and cylinder with 11.8:1 compression, naturally aspirated engine. An upgrade for the Porsche 964 - 993 3.6 - 3.8 liter engine. Spindle mounting required.
Porsche 993 sports exhaust system (power kit) with manifolds complete for performance-enhanced 993 - RS vehicles. By far the best system on the market!