Do you know what year your rebuilt 235 is?
It will simplify how we can guide you along with getting the engine in your truck before Spring.
WIthout knowing what year the engine is, all you are going to get is a bunch of information, much of which will not apply to your specific situation.

1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission