If you can afford it, the M&H harnesses are about as easy as it gets for rewiring. Some folks prefer to upgrade and improve the 70's era technology by fixing the factory weaknesses (replace glass fuses. more circuits, headlight wiring, etc) and that's cool. If I wasn't an electrical idiot, I may have gone the Ron Francis or Painless route, but the M&H, for the most part, is going in great. It's nice having fresh wire throughout the car
I hope to have the Challenger finished sometime Summer!
BTW...the Mopar Muscle Club of NM is having their annual show this Saturday at Meloy Dodge in Albuquerque. Should be a great time and they are indicating a black SRT-8 Challenger will be there (Where's my checkbook!)