a 50shot would be alright, u gonna need a lil colder plugs, and no advancment on ur timing, and higher octane like 93, im workin on a b20 hybrid, b20 block b18a head and b16 intake manifold with 125shot,theres alot more to do withthe motor but, then again if i start sayin what imma do ppl on this site will harass me