Here's what it took to fit the AX15 in my Barracuda:
Rebuilding the Transmission Tunnel
It shifted smooth with synthetic oil in it. I also shortened up the shifter. I was running a 5.2L Magnum.
Only thing I didn't like was the gear spacing. I have 3.73s in the rear. First gear was pretty much a granny. When racing, I'd start out in 2nd. Probably would be better with higher gears in the rear end.
You can run a mechanical speedo with it.
My friend said AX15s are plenty strong. He's into Jeeps and he told me there's guys running them behind healthy V8s with giant tires. BUT, I could never find a torque rating for them.
I'm swapping to a hemi now and have decided to go with the TKX.