Everywhere says Packard 56, but I'm sure I have Packard 58 on all my '69 Dodges. Are the Packard 56 an upgrade?
No, just the only ones available LOL. And somehow compatible
I'm using some Standard Motor Products Packard 56 with factory harnesses and they work OK
every car so far has had American Autowire kits, and all are the Packard 56 style, 0 issues so far