Well, have not been on here for quite a while. Just thought I would share my build story. My 2011 Z06/Z07 with 3,027 miles on it had bad guides; three of the intakes were so bad they were moving back and forth with the springs still on. Anyway I went with AHP heads and the Moldstar 90 guides, PSI springs with titanium retainers, milled 0.030 and race porting. HPA in DE did all the work, we added their Stage 2 cam, CHE rocker arm bushing kit and an Airaid CAI. The car dyno'd 552RWHP with 501 torque.

Sorry, cannot get the video to post.