I have the following motor going into a backhalf s-10 with a glide 4.88 gears and 32X14 tires.. Would a B and M 20600 converter work in this application?

I have a 509, 4.500 bore and 4.00 stroke, Wiesco Pistons with a 1.645 compresssion height, Oliver rods, GM Performance forged crank, 11.3 to 1 compression, Comp custom hydraulic roller camshaft cam with .647 lift, 256/262 @.050, Moroso pan, 31 passes on new Comp springs, Comp hdr roller lifters, GM Aluminium heads (12363391 GM part number 2.25/1.88 valves), 290cc intake runner that flow 330 at .700 lift, 320 at .600 lift. Harland sharp roller rockers 1.7. motor makes 700+hp and around 670 Tq.

I am not sure I would run any B & M converter behind a 700 hp engine. Checking the spec's on this converter, it does sound like it is a full blown race piece. If you have it, try it. If not, I'd spend my money elsewhere. You can have a converter set up by one of the true race converter builders for your exact application. Their price will be around the same money B & M is wanting for this converter.