I helped a buddy build an EFI system on his 68 Barracuda. He used a Mega Squirt box, S-10 Blazer throttle body, a Clifford intake, and the in tank pump setup. (Welborn maybe)

He bought the tool for doing the injector bungs and fuel rail, and I used my buddy's Bridgeport to do the manifold and fuel rail.

He's had some issues with the MS box but they took care of it for him. He's getting it tuned now to where he is very happy with it.