build the ls dont matter the head, stay non vtec, there cheap fun and simple, quick cheap build is gsr crank and rods with ls pistons block guard arp hardware and turbo with crower valve train if high horsepower is wanted if not and want to stay na keep crank and rods just get p30 or pct or p73 depending on what compression ratio ur looking for and crower valve train should reach 170+ na and possible 290+ turbo depending on psi gl man