Thanks. I sent Narragansett an email since they don't have functional online catalogues.
I have talked to Denis Carpenter, Painless, American Autowire, Ron Francis and a couple others and no dice. American Autowire has a plug and play harness that uses all factory Ford connectors....except the headlight switch. AA gives you a new switch that is more or less universal. I have used several different American Autowire kits and I like their stuff. It's a good value and I'm actually using one of their universal kits in the 77.