I have two '49 model A JDs. One I bought running and used it for a few years, then the engine gave up. Upon further inspection, the trans is wore out too. The other I bought stuck, it had been so for 30 + years. The block is cracked and head is shot, but mechanically the rest of the tractor is in great shape. The tin is bad , mostly rusted thru from sitting so long. However, the stuck tractor has very little wear in the trans and clutch, I think it had low hours when it was parked. I have all the engine parts from my original A back from the machine shop, everything is ready to go back together. My original thought was to take the trans from the stuck tractor and put in my original A, but now I think I may be better off just putting my rebuilt engine and good tin work into the stuck tractor. Like I said, its in far tighter condition than my original A. I pulled the motor and crank from it earlier on as was going to use the crank in still another A that I have. So its already apart as far as that goes. Bad idea. . .or go with it?