Torque converter question

[turbobuick1035]

I need some suggestions on a lock up converter..I need to know what stall converter to go with on my existing set up and where to purchase from..I have stock converter that worked fine with me TE-44. But now I have a TE-64 turbo and theres too much lag..existing set up is 212 214 cam prog alchy kit fully ported and polished heads and tb..fmic..009 injectors..beefed up trans to support up to 800 hp