Ive got a 1990 integra ls with a b18a1. i recently bought a new block with a blockguard welded in place. my previous block was bored .20 over. and my pistons were high compression that were .20 over. my new block is stock bore and i rather get my pistons in there now instead of having to tear it all back down in 6 months. so heres my specs. 6al msd ingition msd blaster coil msd spark plug wires crower 402 cams crower valve springs crower retainers arp head bolts eagle rods (good for 900 hp) crank (good for 600) im going to be getting hondata s300 to tune with and also have an aem wideband already. my question is what compression piston to get. ive been reading that a higher C.R. piston is the way to go. It all matters on the tune. im wanting to get a lower C.R piston so i can have more more boost which in return in more torque. if i was to use a higher piston could have have the boost just kick in after a certain amount of rpms. my hp goal is 450 but truely anything above 400 would make me smile. Another question is what turbocharger to go with? I can rev all the way up to 9500 rpms but have not done so yet. ive never taken it past 8k because of the msd pill. when its all turboed i dont want to have it any higher the 9k so i might get an 8800 pill. im hoping the gurus will help me out on this one. and thanks to everyone that helps me out.