Im in need of some help, i have a 91 formula with a 355 tpi motor here`s the upgrades-- 355 fully rebuilt with flattop pistons, lt4 hotcam, 9.7 to1 compression, 083 heads ported and polished with 2.02 1.60 valves, 58mm throttle body, runners, headers with dual cats and flowmaster exhaust, 4.10 gears in the rear posi. cutom tunned. Hers the problom, i had the 700r4 fully rebuilt with all the updates and heavy duty stuff but i blew the new B&M tourque converter allready. My question is should i go with a lock up tourque converter or non lock up, and how much stall would be good for my application?

Please let me know asap