well my homemade idea held well , lol but sadly the engine didnt i only got it tunied to 8.7psi of boost and i ended up with engine crank failure ,,, , engines now buggard the oil pump , all the shells, mains, crank , and trying to locate anothe engine if anyone has a 2.8 24v or 3.2 24v mk4/5 engine can anyone asist ,,,