with a remap and things like a nice induction kit and fmic and full exhaust you should see close to 300. then drop a hybrid turbo and some 555 injectors and cams and a metal headgasket and your looking at about 350-380. any more than that and your going to want to upgrade the water pump , oil pump. acl bearings and some forged rods and pistons and a head drain kit! and that should be good for over 400+. probs easier to just drop a rb26 in though lol!