The engine is what it is, efficiency is no concern.
Yes, the injector bungs being a real character builder.
Was thinking the way of Megasquirt fuel only E.C.U. and T.B.I. off something like 4.3 v6 Chevy.
M.A.P, T.P.S and I.A.C are incorporated in the Throttle body along with the injectors...