cam specs are Dur 222 INT and 230 EX, Lift is 509 int and 528 ex. intake manifold is an edelbrock air gap, pistons are hypereutectics, compression is 9 to 1, HEI distributor. heads are just rebuilt 85 heads... headers though?? why headers? if you dont mind me asking? ive heard of alot people having a lot of trouble keeping headers from leaking...