Should I go with carb or EFI?

My parents have two mid-to-late 80s Dodge Maxi-vans sitting behind their barn. The bodies are worn out from being used in construction work, but the engines are supposed to still be in good running condition: one is carbureted and the other is fuel injected. Are there any particular benefits of one type over the other? Before my folks send the vans to the scrap yard, I would like to pull these engines and maybe use one in a '69 Barracuda fastback I have been eyeing for about a year. I would like to see about readying it for street/strip action.

Jerry