best heads to use
 

looking to build a IAG stage 2 engine 10.5.1 block wanting also to do the heads while they are off if any one has a thought on it would be nice to hear and yes im going to run a JR c38 set up and all the bells and whistles that go with it so any who has redone a head set up please let me know

i run a IAG stage 2 12.5:1 with a c38 with a HBP, they told me the upgraded springs but not beehive was all i needed.



honestly just call them and talk with them and your tuner.

14+ heads have revised rocker geometry, rocker geometry was about the only issue with the early heads and it didn't have a high failure rate. I believe there are some small changes in later years, can't remember. There are a couple threads on it that have the revision changes.

cool thanks guy