Holley sniper efi
I've installed and tuned dozens of Snipers including the one on my Coronet. The Sniper is a really nice entry level EFI system. They are fairly easy to tune and work on but there is a bit of a learning curve. The install is much more difficult than Holley claims, but any decent mechanic can get it done in a day or so. When I built my Duster I stepped up to a Holley Dominator EFI system but a Sniper would've worked okay. Just not as much eye candy with a Sniper as there is with the port injection stuff.