727 build help

Well the Trans is off to the
Sponsor to build it. I talked to him today and he said that it could be ready by Saturday. i asked about the Torque Converter and he said that I need to let him know what I want/need. Anyone have suggestions for what I listed. I have been told that it should be an 8" 2800-3200 stall, but what brand is going to be and hold up the best? I know nothing about this so I am relying on your good judgment to guide me on this. PLEASE!!!!!!

Thank you