if i were you id go a whole nother route.....


id buy a ls bottom end..... build it with pistons and rods..... gsr or ls whatever you prefer. id say about a grand for this when your said and done.

swap on you si head and youd have a mean turbo build.

id go with an ebay kit..... but you need to piece it together....

cast mai.
t3/4
ebay intercooler an dpiping kit..

you get the point....

boost it to 15lbs or more...


youd be well over 300hp reliably.

i did it.... just not to 300 yet 230 at the wheels on 10psi