John, you'll find that a set of harnesses for a '61 are much more expensive than for an AD. The good part is that you may be able to just get what you need instead of the whole shootin' match. The main underdash harness goes in the 2's($200.00+/-) underhood harness is sep. headlight harness is sep. tail light is sep, but you may have something completely different going on there.
Check these guys out. They seem to have the most original stuff out there but they are also doing alternator conversions and such. They may be the supplier for many, if not all the parts houses for these years.
www.americanautowire.com .
The website does not list the 60-66 stuff, but it sells for $449.00 for the whole set up.