Thread: ford EFI questions

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I am currently redoing Shirley's Mustang. Adding 08 Mustang front and rear bumpers and side skirts, + other body mods, new interior, changing exhaust from sidepipes to regular. I am also considering changing from carb to EFI. Having never messed with it before I need some advise. I have seen some mid 80's EFI complete systems go for less than $100 on Ebay and it seems an inexpensive way to get into the new technology.
My question is what would I have to have in order to make it work on her current engine?

67 289 .030 over, KB hyper pistons, Hipo rods, ported heads w/big valves ,10.5 compression. I don't have the cam card in front of me but I recall it is close to .500 lift hydraulic, around 230 dur @.050 110 overlap ? I read that the stock gen IV EEC will probably not work with those mods but I could have a new chip burned for it? What about throttle body and injector sizes?
It is currently running a modified holley 3310 on a airgap single plane, MSD magnetic dist + 6AL box, C4 trans with kit, and 4.10's in a 9".
Is it worth the effort to change it all out other than for aesthetic reasons?
Thanks for the info .
John