^yep he can swap a dual cam head onto it (evo or 2g), and then flash the stock ecu with an Evo rom. This will net about 160-165hp. Stick a 14b on there and 250hp is cake...hell you dont even have to do that. You can just get some sort of EMS and then put a stock turbo and manifold on the single cam head. Thats gonna limit you to the low 200s though.

4g64 is a good motor...same internally as the 4g63, its just the pistons rings that are different. They are good for about 18psi MAX then they will blow out lol. What I've read anyway...

also there is an evo8 head in the forsale section. If youre serious jump on it, they dont show up here too often.

oh and go to club3g.com there is alot more good info there. gl