I'm using the Haywire E series harness.
I've been watching the junkyards for 70s FoMoCos what I'm thinking is if I pulled the charging harness from a 70s T-Bird, or Lincoln etc are they all interchangeable? The alternator and Duraspark I have are from a late 70s T-bird but the wiring is pretty suspicious.
I know I'm probably overthinking it