I've used Ron Francis in my '64 Chevy Truck, excellent quality and easy install. don't care for the EZ wire kits - too many things you have to add. Painless is pretty good except it is not painless. On our '65, we stuck with the original new harnesss, more expensive, but all connectors are in place. We also add a second panel with an indepentdent feed for our add-ons (door locks, pwr windows, pwr trunk etc.