Your swap is not clear to me, are you using a diesel 518 with a gas or diesel motor? And why the Ultra bell, and why a 6000 rpm converter? Its not a lock-up style?

I own a 518 diesel tranny that I will one day drop into a small block street car, and your solutions are not what i expected.

Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.