We replaced the 4L30 with a 700R4, the first and last time we will EVER completely rebuild an auto trans. RJ didn't like the 4l30 and it ran hotter than we liked. We scratch built the headers to the quietest exhaust we could get while keeping the emissions junk. Custom mated the 700 to the 4L30's transfer case. Narrow jeep axles front and rear with 4.56 gears. Home built 27 gal gas tank. We did a cross member under the engine to mount to. And the 91 caddie 4.9. Front and rear links are in the future. It has kept RJ out of trouble and the bars.
PS It had the best house paint money could buy on it when we got it. We figured just camo it and don't worry.
It pulls up a 6% grade on the highway at 70 plus if you back off early. That's why I don't ride with RJ. I'm older and wiser.