Rewiring an early A-body

I've used Ron Francis before and they are great. Where I am now, we use American Auto Wire almost exclusively and I have to say I am impressed. I am wiring two cars at the same time right now. A 70 Chevelle SS454 and a 63 300 HP 327 4 speed Corvette. Although the Chevelle is getting a custom OEM replacement upgraded harness from Painless, the Corvette is getting the American Auto Wire that we normally use. VERY easy to install. All wires are marked right on them what they are and where they go. A chimp could do it. Whatever you get, pony up for a good one. These harnesses we use cost over 1K dollars. They aren't cheap, but they are very high quality.