1968 c10 engine swap

[JustCallMeDrew]

So here's my 68 c10 to give ya'll a little back story i bought the truck 4 years ago when i was 16 and being young i just wanted to work on something. I tore down the 250 engine that was in it and then lost motivation and funds were low. So that brings us too now 4 years later i finally want to finish the truck (as if that will ever happen ) i just recently purchased another 250 engine off craigslist since the other one in the truck the block was rusted from top to bottom and didn't want too take the time rebuilding it, the one i bought was running when pulled 2 weeks ago. Now here's the problem the newer engine i bought came out of i believe a 1983 c10 and it has the integral head can this motor bolt up and go if not how hard would a head swap be and what parts would i need to buy if i already have the other motor? The head on the old block is not bad it was one of the few pieces i bothered putting in a building.

P.S. I don't know if i posted this in the right spot just really looking for advice so any help is appreciated.