4age = slow and boring.

beams or turbo 4age imho. both proberly cost a similar amount to do PROPERLY.

but then again, doing things right the first time is not something ae86 and ke70 owners USUALLY do. so im sure people will tell you "buy 100 dollar china manifold and run it on stock ecu its fine bro"

research and do it properly the first time, it will save you in the long run.