Help with stock EFI

I don’t have one yet. I’m still working on a parts list. My reasoning to use the stock stuff is to keep cost down for now, but I may find an intake and carb will be cheaper and faster. I really like the idea of EFI though if I can make it work.
It's just my opinion, but it's cheaper to keep the stock EFI if you have all the parts from the donor. Only extra cost is a fuel cell.