I'm doing a FWD head conversion- well heads, pistons, crank, and intake- and want to know which computer setup would be best to run with my 5 speed. Do I have to pull a computer out of a manual equipped car, or will a computer form a FWD 3100 auto work? Oh, and which 3100 heads are the best? Are 3400 heads any different? I'm going this coing weekedn to pull all the parts and want to make sure I get it all.