i could be way wrong hear, but i was under the impression, from talking to other people, that a sleeved b16 with pistons/rods could do what you want.....obviously youd need a decent sized turbo. for some reason in the back of my head i was thinking this is supposed to be cheaper. im sure if im off someone will correct me. but im sure a build like that could be done for les than 10 grand, if done right the first time around.