[Batman]

LCA's, Panhard bar, torque arm, SFC,s maybe a STB. Better trans cooler, maybe a deep pan. drag radials, maybe skinnies. All of these will get you faster as much or more then adding just HP. Did you do any intake/exhaust work yet? To be honest the suspension isn't adequate for a stock engine if you plan on doing anything except over the road driving. You'll have to deal with wheel hop more then anything