For engine swap...difference between LA 318 / 360

Motor mount from the 318 can be made to work if you want to put spacers on the drivers side. Otherwise, get a 360 mount
You can use a neutral balanced converter IF you put a balanced flexplate on the 360. Or, get a balanced TC
360 oil pans are different from the other LA small blocks, and you'll need a car pan/pick up
Harmonic balancer needs to be for the 360
pulleys and brackets are all interchangeable
Pretty straight forward swap to be honest.