If the Binder Bulletin was up and running, I would say to look at the "Project Rock Scout" thread in the IHSTO forum. They did an auto conversion behind a 4-cylinder. There is a problem with fitting it in the body without cutting a lot out of the floor boards and the tunnel cover. The 4-cylinder motor has no problem driving either the rig or the transmission, when the rig runs. There have been many problems with the EFI, the transmission controls, and some assorted gremlins. Once those get fixed, it should run great. There are plans over the winter for several folks in our club to help get the kinks out of it, of which the transmission is but one of many. While I do not have any problem with using a 727 in an 80 from a functional standpoint, it will not fit without major surgery, and your truck will not be very pretty or warm in the winter, not to mention the potential resale value taking a hit. Stick with the stick, or install the BW unit, or sell it and get a Scout II with an auto.