Please give opinions on new setup...

[Smokedawg]

347 Stroker
AFR 185's, ported and polished
Holley systemax intake, ported and polished
Anderson cam
1.6 or 1.7 RR's
30lb Injectors
76mm C&L
70mm TB
Holley adjustable fuel regulators
D&D Tubular K-member and A-Arms
Flaming river manual steering
Windage Tray
Long tube headers
Fuel cell
Rear seat delete
Battery in back
A/C delete
Smog delete
Underdrive pulleys
Flex-a-lite fan
8pt Roll cage
O/R H-pipe
4.30 gears
31 Spline axles
Mac upper and lower control arms
Quad shocks removed (Hoping to fit 315's in the rear)
Eibach drag launch kit
70/30 struts
50/50 drag shocks

My only question is I dont know what tranny to buy. I am wanting a strong Auto with a good stall, what is a stall that is streetable but still has plenty of balls...
The car has been doing the one wheel wonder for some time now. Will rebuilding the trac lok be enough or will it break again with to much power...

After the car is all together I am taking it to Andersons Motorsports in Ill. and having it dyno'd...Then from there I am going to add a shot of giggle gas to get it to its limits..isnt the stock block limits like 550hp??? is that at the crank or the wheels??

Thanks
Derek