ok here's my set up. I have a legacy 2.5 gt with a 2.2 in it. First I'm going to free jt up with light weight flywheel and pully system. Also while I'm at it in putting now crank bearings, piston rings, and seals. I want to boost if and I was wondering if it would be a good idea to put my 2.5 dohc heads on this 2.2 or keep the sohc heads that are on it.