need right tourque converter

Not wanting to bash Summit or their customer service techs. They can certainly read the propaganda put forth by their vendors, but so can you if you go to the web sites. But you have 2 choices:

Contact the various converter vendors and ask what off-the-shelf converter fits your needs best and then surf the web for the best deal.

OR

Call Dynamic or one of the other custom converter shops which support professional Torqueflite racers, discuss EXACTLY what you want and write them a check. At a minimum, you will learn a bit about just what a particular converter will and will not do for your combo. Yeah, they may cost more... until you buy your second off-the-shelf converter.