'96 5.7 Vortex for my '71 GMC ?

[FrankenCub]

I have been deliberating on what to do about my current engine woes and came across a 5.7 Vortex engine for cheap. Owner claims it runs well so I'm thinking it should be good to overhaul before I replace what I have now. I wan't nothing to do with Injection and recall seeing something about carb intakes being availible for them. Is it worthwhile going this route, or better off going with a Gen1 5.7 ? Plenty of those too but big price difference with them and I don't know squat about the Vortex engines.

Any opinions appreciated