What all do I need?
 

I have recently purchased a 1986 5.0. The previous owners decided to change it into a drag car and changed it to carburated. I want to change it back to fuel injected. It does have it's original computer system, but does anyone know what do I need in full to change it back? Or can anyone tell me if an 86 could pass a Colorado emissions by being carb'd? Thanks for any help in advance.