Pro comp SB aluminum heads ebay combos

As I said in the other thread - I'd like to see them in person. The numbers claimed on the Bullet are higher than anything I've seen for a stock intake pushrod location. Not saying it can't be done, but usually the proof is in the testing by someone qualified not affiliated with the seller.
On the helicoils - I agree. I don't believe the lack of inserts is a problem.