Not a Skid Steer but I purchased a backhoe Kubota L45 with a V2203 locked engine. Found the cam journals shot and the cylinder #1 shot as well along with the crankshaft. Purchased a reefer engine V2203 and just completed the changeover. Here is what I had to do. Went from Indirect injection to Direct Injection. I rebuilt the reefer engine with new pistons, bearings, wear rings, and lapped valves. I had to use my timing cover so governor controls could be used but my gear cover was built for balance shafts and had open areas.
I made a dam from clay and prepped the cover for a JB weld pour and once set, filed to fit the engine and was good to go. I had to use the reefer intake manifold but the holes for the air cleaner mount were offset and I had to make an adapter plate. Also my hydraulic pump was a 3 hole and reefer block was 4 hole, I brazed a piece of steel bar to the block and using the pump as my guide drilled the third hole and tapped it, and put plugs into the two unused holes. I had to drill hole in the block for dipstick and used the old dipstick holder and JB welded to the reefer block.
Also the fuel pump is mechanical and runs off the injection cam and so I had to use my original injection cam and drill a 3/4 inch hole and two 8mm threaded holes for the fuel pump to mount to. I did set the fuel injection timing to 12 degrees BTDC but I just moved it to 16.50 degree BTDC It seems to be starting easier, but I'm thinking about trying 20 degree BTDC as at 16 I can still smell fuel but I don't have any smoke at any of the settings. Been quiet the project, but should be completed soon.