My 383 build

[66SSFan]

This is my engine build for a fun street car/friday night drag strip car.
Anyone have an idea on the power level I can expect from this or have a dyno sim program? I'm shooting for mid to low 12's, but think that's optimistic for a full weight '70 chevelle, it may see a 150 shot of the go fast gas in the future. I still need to collect a few more parts before it's ready to run, here is the basic combo,

4 bolt block, main lined, decked, and bored .030
3.75 forged Scat crank
6" Scat H beam rods w/arp 2000 bolts
Mahle forged coated pistons, 11.3 cr, .005 in the hole
Heavily ported iron 034 bowtie heads, felpro .041 gaskets
Victor Jr intake, port matched and cleaned up a little
Stainless 2.05 intake and 1.60 exhaust valves, 7mm stems, ti retainers ect.
Comp cams stainless pro magnum 1.5 roller rockers
UD Harrold cam 258/266 @ .050 288/296 @ .020 solid flat tappet,106 lsa .540/.560 lift
12 bolt rear, eaton posi, 4:56 pro gears
Th400 reverse manuel shift trans, redneck 9.5" 4500 stall converter
Mt/Et streets 275/65/15 tires.
950 Proform carb
March under drive pulleys