55 261 engine going into a 53 chevy. It'll be mounted using the plate on the front of the engine and the existing rear tranny mount.

Question is the side mounts at the rear of the engine. Will I be able to bolt the 49 side mounts on using the 53 bellhousing or will I need a 49 to 51 bellhousing?

I'm 800 miles from the car and parts right now and I have a chance to buy a 49 bellhousing. Don't want to buy it if it's not needed, but would hate to pass it up if I'll need it.