Just finished installing a Borg Warner T85N O/D in my '61 Apache 10. The tranny is exactly the same length as the original three speed thats in there. Didn't have to modify the drive shaft length. Simple bolt out, bolt in install, just a little wiring to do afterward. With the stock 3.90 rear end, running 235/75/15 tires the old 235 straight 6 should turn about 2400 rpm at 75 mph.
