You may want to check the diameters of the front pully/harmonic balancer on the 216 and the 235. I put a '55 235 (narrow belt) in my '51 1/2T and found that you need the "smaller narrow belt" front balancer to clear the front motor mount.
I could measure for you but from memory they are 6.75" diameter for the small and 7.25" for the large.
PRW
