Converter choice will be critical with that much power, and only 3.23 gears. You'll need a quality custom converter from a Mopar specialist (ptc, dynamic, others also). Don't scrimp,it won't be cheap, could make or break the combo.
(Also, you HAVE the cam....run it!)
We have used A&A for the last couple of builds and have been happy with their converters/ transmissions. I plan to have them make me a converter based on the specs, so hopefully it works well. (I know the importance of a good convertor)
