I had mine done through Bullet cams about 2 months ago, there is not a hole lot that can be done with these factory cams, at least not with my 95, we settled on this grind.

.477/.477, .216/.218 @50 on a 112 with 1.6 rockers.

If you want more, i'd call Hughes, i'm limited to .500 lift also on my RHS heads, i was looking at something on a 109/110 LSA with Dur. in the upper 220s/low 230s @50, lift right around .500 with Hughes, this should still work great with a 26-2800 stall, mine is a freakin torque monster with this cam, i'm sure it'll fall apart at 52-5400.

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