What form of injection are we talking about?
TBI?
Hilborn conversion?
port injection?
There are several types/levels of aftermarket TBI setup out there. Holley comes to mind. Some use an O2 sensor, some don't.
Hilborn and others can sell whole setups or just parts for converting old mechanical injection setups. I would think that these could also be used for a homemade setup of some kind. The injectors won't care what kind of manifold they get screwed into.
