Hi Dave,
I'm pretty new here too. I have a 67 2-door hard top. I'm not very familar with your variant nor am I hep to 4.6 Ford V-8 as I'm a Euro tech. But, I did grow up with 60's muscle cars.
I put a Ford EEC-IV system complete with aluminium intake, SMFI and 1000 cfm t/b. I got the complete kit from a company I found online called MASS-FLO. I preferred it beacuse I could keep my big block FE 390, get more power and better cold start. You might consider that as an alternative and put a built big block back in your baby. Here is their website.
Mass-Flo EFI, The World's Only True Plug and Play EFI System.
I'll warn you, it's pricey, but if you get what you want (intank fuel pump or rail pump, etc.), I think you'll be happy with it.
Welcome to the forum !!
Lad