I think you guys are comparing street cars to track cars, apples to oranges. Does he want a street car or a track car? To say a twinscrew or a turbo is going to beat a centri every time is just retarded. Just way to many varibles. If you pull up next to a car that you don't know and all you hear is the blower screaming, to think your going to spank him just because you have a PD/turbo is well "retarded".