I was thinking about using AAMCO myself.....they recently replaced the transfer case on my Silverado 2500HD. Did you remove the trans and take it to them or let them do the whole deal? May I ask what they charged?
I had my whole Bronco 2 over at AAMCO. They did all the work from start to finish. I don't have the patience to do mechanical work LOL. They charged me $2450 for the complete rebuild including new torque converter and new tranny cooler. This also was a slightly upgraded rebuild with heavier duty parts to supposedly keep the transmission from destroying itself again, but a lot had to do with the previous owner improperly towing it behind their RV.
I had a lot of work done to it on top of the transmission rebuild. I had the front brakes done, tie rod ends, front driveline u-joints, and rear driveshaft rebuild to get rid of those non-serviceable joints in it, so now it has u-joints.
They did a great job, they charged me for repairing the AC but that didn't work, I rebuilt the AC system myself a couple years ago. They put dye in the system so it was easy for me to figure out where the leaks were though LOL.