Hi 6inarow,
I built a 1936 chevy coupe, If you are going to swap out the old engine and put a later model engine in, like a 235, why no change the whole drive line. I pulled the old 207 engine, tranny and torque tube out and used a 250 engine and a 350 transmisson. I also used a 10 bolt rear from a 1977 nova. the 250 engine has motor mounts on the side, rather the on the front like the 216 and 235. I got motor mounts form Chassis eng. The 36 had a transmission mount that went across the frame but I modified it so the 350 mount would bolt in. the drive shaft had to be shortend about 2 inches, and the car ran really good.. The 250 engine fits in there, but is tight. you have to get it way back almost touching the firewall,
I think if you are going to go to all the trouble of changing to a later model engine, I'd do the whole drive line. sure saves a lot of trouble
Mike