yeah, the B20 will bolt up to the LS tranny you got now which is good for turbo app.s, plus the B20 is the same thing as the B18 except the bore, and cr, which is a bit lower. 8.8:1 and the B18 is 9.2:1, I think if you wanna boost any more than about 12 psi, you should get some strong rods, and some (ductile iron?) sleeves. but if you are going to go turbo, you should just spend the moeny that would go towards, head, manifold, vtec wiring, ecu, and all that good stuff on just building a turbo B20. but if you want all motor then go CRVTEC and get some high cr pistons.