I just installed my third or fourth engine harness made by Bill Evans. Here is his online catalog address.
http://www.evanswiring.com/catalog.htm They are very nice harnesses with nice flexible wiring and quality connections. For points ignition they are only $99. And for a little more he will customize them a bit for electronic ign. and if you need a longer length wire for a different location.
I had him make up a harness for a '67 Imperial Coupe I worked on a couple years ago and it made the job a whole lot simpler. I highly recommend him and the ability to actually communicate with the person doing the work. Jim