Throw in your.02 on Torque Converter Suggestion
Part of my point is if you tell a converter company that you are making 400hp and it's really 300 hp and the resulting lower tq with that estimate, you'll be sorely disappointed in receiving an extremely "tight" converter.
If anything, this build needs, more converter than what the advertised numbers suggest. If he wants a real 2500, he'd be smart to look at the 3000 level behind that engine.