I bought mine from hughes ready to bolt on in stock form, now the price at the time was 800.00, I ran 12.5s at 105 with a race weight of 3200+ lbs., this was with a junkyard 360 magnum shifting at 5100, just bolt-ons, 3.73 gears & an 11" 2800 stall, 650dp. These heads are still great in stock form, just depends on what your after.
75 Duster, 451 10.87 @ 123.58 NA
97 Z28 6sp., 12.01 @ 115 on a 100 shot
71 Swinger. 360 magnum. 12.58 @ 105
78 cutlass, 469 BBC. 12.70 @ 108 on street tires.
http://www.youtube.com/watch?v=Z2kqNmMfheU
