95 OBS I'm still in the hunt

[LS short box]

So I'm looking at a 95 OBS tomorrow with a 4.3/5 speed combo. That combo will go at some time. Either a large cube SBC or LS swap to replace it.
In regards to the SBC will the 4.3 front accessories including AC bolt to the front of a SBC?
In either case SBC or LS what needs to be done with the stock 95 engine compartment wires wise? I'm big on deleting any excess wires to clean up the engine compartment. Get rid of the TBI computer?
Any good threads on this?