been there mate, 20 yrs ago we toyed with a brick. we used a ihi rhb5 turbo of a ea82 subaru import engine ,knocked up a manifold from buttweld fittings and an adaptor to fit a 1"3/4 su carb directly to the turbo. [no intercooler] and fair dinkum it went like stink with a tank full of avgas. do it simple, get a taste of turbo and then get serious with a o,ringed block, turbo pistons, efi and a intercooler. cheers darin