The ff is a shaft drive hydro, so you would have to get some sort of transmission to go in front of the 2 spd rear. Honestly the sunstrand (i believe) hydro is extremely strong, and will spin the tires. My 400 has the same transmission and a similar engine, and they will both push or pull alot. If I were you and wanted a grear drive I wouldn't tear into a hydro ff. they are worth allot with the hydro, and are tanks. a sears or pulling guy may give better info.
I wouldn't try pulling with a hydro. The hydro transmission can use up to 6 horsepower just to operate it alone. Also the prolonged heavy load caused from pulling will make that hydro so hot the paint will smoke, I've seen it before and they don't last long after that.
I've never seen a hydro pulling tractor that did any good.
I would look for a gear drive Cub to pull with and save that Sears for working at home.
I've seen lots of Cubs with Wheel Horse, Massey, John Deere and about any other brand sheet metal on them. Most of them look great too.
I have nothing against any other brand. I own several brands, and started pulling with a Wheel Horse, but to be competitive I switched to a Cub.
Ok well i got a cub cadet 70 and i decided to get a bolens 1225 hydro. For a pulling tractor i was thinking the 12 horse motor in the cub or take the cc gear drive trany and putting it in the bolens what do i do?
Use the cub frame, and throw the bolens body on it...now u have the best of both worlds! Hydro isnt a good idea since heat burns them up...it might do good for 2 pulls or it might last all year and then go poof and its done...