I took the carb off the original 235 splash oil engine in my '46 2 ton and it bolted right up to the 216 engine in the 1/2 ton, and ran like a champ.. so I don't know about bolt spacing being different between the 235 and 216 at least not in the 1946 engines, anyway.
I was under the impression that most of the 216 and 235 parts were interchangeable.. so I don't think you could determine the engine size by what carb, intake, flywheel, pressure plate, etc came off the old engine.. and the original tag on the cowl wouldn't tell you anything about engine size, anyway.
