I have a y7 it blu the bottom end rod thru the block.. I'm thinking about puting a y8 vetech back in it with A6 crank and pistons.. I jave a few questions.. Is it a good idea and my car was not vetech. But im going back vetech ..if i get the y8 harness and ECU what else do i need to do to make vetech work correctly...about how much HP will i get doing this.. I already have header and full stainless exhaust and coldair intake and 10.2 MM pluge wires..all JDM parts..