Upgrade from 170 to 225. Engine resting on steering bar.

the oil pans are different from the early slant sixes to the later 1962-66 used the same motor mounts from your original block also you need to use a crank adapter between the torque converter and the back of the crank with out that you will run into problems 1967 and up has a bigger diameter crank register vs your 1963 block that has a small one