I agree with
@crewchief to a great extent. M&H harnesses are VERY good. I have their under hood harnesses in my 69 Barracuda. They are exactly like the originals down to wire colors and connectors. If you can afford their harnesses, then go for it. You will not be disappointed. You can sign up to get on Year One's Email list and wait for a 20 or 25% sale. I think that Classic Industries might sell them too, so you could get on their Email list also. The under hood wiring should not be terribly expensive. That being said, if their stuff is not in your budget, if you could find a nice used setup that looked good, it might work out okay IF you checked it out THOROUGHLY. I would lay it out, take lots of pictures, unwrap all places where wires are bundled together, check every wire for continuity and for cracks in the insulation and then re-tape the places that were taped before. But you really need to start off with a good used harness with all factory connectors present and in good condition. Layson's used to sell the exact kind of tape the factory used. If they don't have it, I have a whole roll laying around somewhere. Again, new would be best, but if it isn't in the budget, get the best used one you can and check it out.
