What the heck, another "what'll it run" thread

I know it's a hard thing to predict and there are many variables that will affect e.t., but I figured "what the heck" I'll post up and see what I get.

My car's nearing completion, so here it goes. 1968 Barracuda fastback, mini-tubbed ladder bar car with 28-11.5/15's, Dana 60 with 3.73's, GM 4L80E with full manual valve body and brake, PTC custom twin clutch lock-up converter with 3000 stall, tubular k-frame with QA1's front and rear, full roll cage. The engine's 517 c.i.d. based on the "B" platform, fairly mild with 11.3'ish to 1 compression, lightly massaged Perfromer RPM heads, small solid roller .613/.613 262/262, Victor 383 with a FAST type TBI and 96lb. injectors running alpha-n. Dyno'd at 638hp @ 5600 and 671 ftlb. @ 4400 as a baseline. No tuning's been done....yet.