The exhaust is on the right side of the engine. It's a cross flow head. Check with some of the construction equipment salvage yards. Some of the construction equipment used turboed 310s or 358s.
Troy just the opposite here. I had a friend who had a 20 or 2630 Deere. They liked the tractor but it would start in cold weather. They went to t. he Deere dealer and tried a 2640. It wouldn't start either. They went across town to the IH dealer a tried a 784. It started on right up and they bought it on the spot.
If you are looking to use a 544 backing plate make sure it's for a 544 FARMALL. The Farmall is based off of a 656 driveline, the utility is based off of a 504.
Hi clears always draw attention. 18440 Farmall 100s made. No idea of how many were hi clears. 66290 140 Farmalls were made with 2861 being hi clears. Obiously if it's a 100 hi clear it would be rarer. These numbers do not count the International versions of each model.