I had the head remilled, all new gaskets replaced, new timing chain, new radiator, water pump, hoses and wiring. As I indicated earlier I then added a Carbon-air box w/ BMC filter, Bavarian hi-perf wires, Nology Power-core, Mallory 55,000 volt Promaster coil, FSE Power boost regulator, Hi-perf. battery, Beru Silvertip plugs, 19lb Accell hi-perf injectors, Red-line Water-Wetter, custom grill/air dam system by Signature Motoring, Ansa Sport exhaust, Raisin voltage stabilizer, Schnitzer Motorola 18hp chip, dyno-tuned for maximum air/gas flow. It has been dyno tuned and has 197hp at the rear wheels with 220hp at the crank, an improvement of about 10hp over the German version. Note the ACS graph showing the difference in power range.