do this..add the cam t-chain set, headers, intake (CH4B) carb of choice (no 750 eddy's) and run it. See how you like it. Then if you want to upgrade to EFI do it. I think you'll be happy. A small cammed 440 is going to put you back in the seat.
A good cheap build (and I've done a few) is a new t-chain set, summit 488 cam, CH4b intake, holley 750 carb, headers and MP electronic ing. Makes for an easy 13 second b-body. Ran 12.90's w/ the same set-up w/ 3.91's and a 2800 stall. Non-ported 906 heads, cheap headers and 2.5 exhaust.