You have to use the 545 flex plate and converter. The stock converter is 2400-2800 stall depending on who you talk to. The link I just posted has higher stall converters.
Thanks for that, I got the converter, and flex plate when I bought the tranny. $650 for the whole shootin match. I dont think that was to aweful considering it has 29K miles and I drove 10 minutes to get it.