How will it perform?

Well let's do a simple comparison. You have much better heads than my 408 (TrickFlow vs my Eddy RPM), more cam and a roller to boot (my SFT 251/255 @ 050/~.560 lift), more compression (12.5 vs my 10.5), more carb (my 850 DP), more stall speed (5800 to my 5000), and I suspect about 400#'s lighter than me. We both have split mono CalTracs, Calvert 9-ways in the back and 4.10 gears. I run a 28/10.5W bias slick. My car runs low/mid 11.teens at 118 so you ought to be in the low 10's at least. Can't wait to hear what you get out of it!!