I think I was one of the first people to try that big of a change to a 71 - 73 cluster in this group, so there was a lot of experimentation the first time around. If I were to do it again, there are very few modifications, but a lot of new wires. I am going to try to post some instructions on my web site soon. As far as the patch panels, the project evolved. Do to some creative bodywork by the PO, I never planed to go that high into the wheel well. But once I started cutting back the rear corner, it became clear the outer wheel well would need some work and that could not be done with the fender flare on. I had already purchased the rear quarter, so I just bought the other piece. The two pieces are more manageable, and I am going at this alone so it lets me break the project into smaller pieces.
JH