well i have a new set of lightly ported ones in the box sitting in the front room. waiting on a set of crane valve springs that will hold back the 18 lbs. of boost the procharger is gonna pump to the 408w. thats the only catch about these heads from what ive found out....there good but the original springs wont seal properly under a fair amount of boost. as far as a n/a motor goes, ive talked to several speed shops that say there are some better heads out there but not much difference, and for the money you cant beat them.
2000 gt, bbk coldair, accufab upper, steeda underdrive, 4.10s, eibach lowering kit, M/T drag radials, 8.60E/T in the 1/8......82 gt, 351w edelbrock h/c/i, barry grant 750, msd, 4.56s, 6.90ET 1/8