its for a frind he has a carb an got a recked efi from hes old man the efi has broken case so motor is no good he was just thinken he cude change the trotal bodys and ecu and some wireing and i didnt no so i posted for him
I think the stators are diffrent, carbs/throttle bodies, wireing harnesses, fuel tanks, fuel lines, probably some other small things but thats the majority.
The engine cases of the efi and carb motor are different so if his dads is toast then the swap seems unfeasable. Like others have said, if you want efi then sell the carb and buy an efi.