swap 83 4ac into 86 sr5 direct bolt?

[RollaAce]

I found another 86 sr5 that needs an engine. I have an 83 rolla 2 door sdn (not sr5) that I've been keeping for a parts car. Will that 4ac bolt directly in there? I would think so. I also have an 82 rolla with the 3tc, I wonder if I should stick this in so I would have more power. Or maybe I should get the Power Pak from Paradise Racing for the 4ac eng. What do you all think/know?

[RollaAce]

I didn't asked a dumb question.
I'll tell u this, I put a 3tc engine in a 82 rolla 2 dr sdn from an 80 rolla sr5 and it just so happens that the alternators where different, one had a two prong outlet and the other had a three. The housing for the 80 was thicker at the holes where the long bolt goes through and i had to file it down to fit.
I was hoping someone on here would know of the difference(s) if any.