Oh, don't get me wrong, I don't think they are totally worthless! I agree you can make the power but 525 is about where they start to become restrictive from what I have read! I dunno......
Aftermarket is the way to go, and I have talked to a head wiz, and he told me putting money into these heads would be a wast of time as well!
AFR is the only way to fly on the aftermarket in my opinion! I think I'm going to go with the 205's!
My combination is boosted if some of you didn't know! I'm planning on on running anywhere form 12-14 lbs of boost through the intercooler on the stock long block! My goal this year is 11.90's with my combo!