or screw just bolt ons, just need an idea of where to start first with getting more power out of it, i was thinking of stroking it to 355, then where can you go from there if i want to keep it naturally aspirated??
Be prepared though, that it's not a cheap exercise.
If you stroke it with some decent compression (aim for an honest 10:1) nice size cam, T/P manifold (either dual or single plain, depends what you're after) 1000CFM throttle body and mabye a little tidy up of the heads it should make an honest 400HP.
But that'll set you back about $7000-$10,000. That's just the engine, no other driveline work.
awesome thanks for your help mate, might go talk to someone at a performance shop to, ive got a budget for now of around 15k for the build whole cars in mint nic to so the engine isnt to tired at all thankfully