engine block replacement with a newer engine

I just recently got an 82 ford mustang 2.3L carburated automatic. i got it for 400 bucks and the car is in great shape only 76k orig miles. well someone never changed the oil i think and it has a rod knock, actually has a hole in the oil pan now. well anyways i got my hands on a good long block out of an 89 ford ranger. and i was wondering if i could use this block in my car. i was gonna reuse the head of my orig engine and put it on the 89 ranger block. any information would be great, i been trying to look around and i couldnt find exactly what im looking for. also if this block didnt work out could i get a fuel inj. used engine and put it in my mustang, useing my carbuator? i am having a really hard time finding a used engine that is carburated. is the head different on the two? any block differences. thanks --David

thanks for the info. i would really love to drop a turbo fuel inj 2.3 into it, its such a nice car really clean, for sure in california its whole life, but im broke with court fines, dui and tickets, i probably am gonna put this engine and sell it. kinda sad but i got a few projects, i always wants a 80's early 90's 5.0 mustang but now looking into the 2.3Ls i really like em. i was an entry level tech at a ford dealer for about a year before i started doing heavy equipment moible mechanic work, got to drive a really nice SVO some old ladie had, amazing i loved it. but yeah thank you for that info i got a block from an 89 ranger today looks really good, gonna do the work this week i hope. hopefully it will run as good as it looks.