here is the scenerio. Say you have a 79 blazer which will be the trail rig. It has 350/th350/np203. And you have an 86 blazer which is a dd and has 350/sm465/whatever tcase came stock with that combo. How difficult would it be to swap trannies in these vehicles to make the dd auto and the trail rig manual? I have a chance to buy the 86 cheap but my dd has to be auto so my wife can drive it and I'd prefer the stick in the trail rig anyway. Could I just swap trannies? Tranny and tcase? tranny tcase and driveshafts? Should I keep looking for an auto dd?