A904 torque converter upgrade

I’m pretty sure you could call up TCI or one of the other companies, tell them your setup (they may ask for spec on the engine, cam, induction, trans gears, final drive ratio, tire size, etc and how you want to drive it) and they would give you something in the ballpark that would work well. That said, your eventual 360 set up sounds somewhat similar to what I used to have in my car and the consensus was that a 2600 RPM stall was a safe bet.

Still, Converters are not cheap and swapping one is probably going to take you a couple hours (it would take me about four :) ) so it’s worth calling and asking the question IMO.