The PQ (and PD for GTO's) Ram Air TH400 trans has a good torque convertor from the factory. Though it is a stock low-stall 13" unit, it is beefy with furnace brazed fins. It is recognized by a big "5-5" paint stamp on the body perimeter along with 6 furnace brazed mounds on the sleeve side about midway on the body. I, like 70RAIII, had my factory "5-5" convertor checked out and reused in my RAIII Formula. If you have your original convertor, have it opened up to check the condition, most likely good if the trans was never burnt up and beat to death. I would stick with the factory convertor if your engine is going to remain fairly stock with good low end torque, especially with your 3.31 (or 3.07) gears.
Dennis
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