I was wondering how difficult is the F.I. system Cadillac had in the Fleetwood Brougham back in 84. Do I need to rip it all out before I swap in a new motor? I think I'll go Carb since it may be easier to swap in. Nothing wrong with the 4.1 in it right now but I will swap it out when the time comes. So far I am thinking 350 but now I may lean toward the big Cad motors. It all depends on how reliable the Big Cad are. Not like I can walk into Pep Boys out in the middle of nowhere and ask for a valve spring.