Several years ago, I bought the 1919 Avery 5-10 tractor. The 5-10 means 5 drawbar hp and 10 belt pulley hp. The original engine was an inline 4 cyl. The major design flaw with it was there was only two main bearings. Best I could tell from the remains, the crank shaft got to bouncing, broke and blew out the side of the block. At some point, the farmer cobbed a 1933 Willys model 77 engine and transmission in. The tractor didn't roll or steer when I first got it, but I freed all that up a couple of years ago. The willys transmission does shift, but the original Avery one does not. I'll have to free that up still. So now its my turn to do a great depression build to it. I had a spare L head that turns, and I scrounged up enough parts to make it run. Looks like the only parts I'll have to buy is a pilot bushing and a lower radiator hose. I'm hoping the Model 77 transmission will bolt up to the CJ2A engine. My plan is to build it and make it work with what I have just like it was originally done sometime after 1933.