Carburetor, MSD, Holley Sniper EFI questions

I think my post absolutely shows that I do not know as much as I should about EFI. I do know I am going that route, but I have to do more reading. I think my biggest stumbling block is that I have not seen a step by step for a mopar anywhere. I have seen the wiring diagrams on Holley's website and I downloaded the Sniper instructions. I watched some install videos on YouTube, but I still don't have a feel for a install should go. I'm still a ways out from doing this so I have time.