440 Head and cam question

Not to "brag", well just alittle, i've gone a best of [email protected] with BONE STOCK 906s, they CCed at 90, this is in a 3100 lb. duster, 451, 9.8.1 compression, 250/256@ 50 comp solid, 511/517 Net lift, 411s, 4100 stall, M1, 750 carb, shifting at 5800, This was on a slow 1.58 60ft. I'd say there not too bad!