I'll check into Hughes!
The 1 that's in it now(p.o. install?), I can power brake to 1800rpm, flash unknown?
It won't start to move truck until bout 1000rpm.(mild 360 ,300hp ish).
He had local b-grade shop rebuild tranny the year before I got it.(had receipt).
I can't imagen they used anything but stock?
It almost feels like a RV TC? With trailer behind it spins up 12-1400rpm before moving.
I may just chance it with the big motor