Does anybody know whether exhaust manifold blockoff plates are avail. for EFI 460's w/AIR? I want to take the system off the '88 460 (EEC IV) that is going in my '78 and I don't wanna fab if I don't have to... Thanks!

I have an '88 460 EFI that I am going to install in my '78 Bronco. I want to do away with the AIR system. Is that possible without confusing the EEC system (EEC IV)? If it is not a problem, does anybody know where to get blockoff plates for the exhaust manifolds or if anyone even makes them? I...