What do you think my car will run?

71 Duster will weigh about 3200 pounds (w/o driver)

340 bored 30 over
10.5-1 pistons (about 9.5 acutual im guessing)
x heads with a little porting done to them
XE268 cam
torker 340 intake
eddy performer 750
summit headers with 2.5 inch exhaust
727 auto rebuilt with shift kit
either a mopar 175k convertor or something similar that stalls at 25-2800
8-1/4 sure grip with 3.91s
Indy Firehawk Tires 295-50r15s on rear about 26.7 inches tall

I built the engine almost exactly like they did in Mopar Muscle a while ago and they got 391 hp and 410 lb ft so I should be around there. I know I probably won't be able to get any traction with the street tires.