1984 CRX engine swap

How do I find out what engines will bolt up to the transmission of the 1984 CRX which comes standard with the 1.3 cvcc engine?

I have found a couple of engines for sale on craigslist, and I am a newbie to Honda ownership, so I am just getting started on my technical research. Any help will be greatly appreciated.

Anything of the same series SHOULD bolt right up, look on the engine to see the first letter of the engine code, that is what series it is. If i had to guess, it's probably a D series, so any other D series will bolt on, but with engine swaps, you may have to change around some wiring.