I'd say the same thing everyone else is saying, good luck, its such old technology and you will never make huge power and the driveablity is gonna suck.

That being said, i know the older VW crowd still uses drawthru stuff, you may wanna hop on there forums and see who they use for those seals.

Even the "dung beetle" on street outlaws was draw through, tiny turbo on it but draw through.

http://www.youtube.com/watch?v=3gsqQG_bKiA