HOW ABOUT A 1979 318 V-8 IN MY '73 SCAMP?

My second thought for an engine swap which will probably rate some more positive comments from most of you!? I found a 1979 Dodge Magnum XE, 318, auto, AC, PS. It's a complete car, owner says "running and driving when parked back in 1999!" Anyway, I have driven up there and it's kinda rough, but is all there and hasn't been ruined by someone out there pulling this and that off of it. NOW, what will be involved if I use it's motor and trans in my Scamp? Keep in mind, I'm barely even a shade tree mechanic (my dad was the mechanic in my family! RIP Dad) I have just recently started working on my own cars some getting ready for retirement soon! Love to get my hands dirty and actually FIX something instead of just going out there and buying a new one! Thank you for all your help!