GM Alternators

inertia said
The only issue with them, is if the most fragile piece of the charging system is inside the alt, (the hottest, shakiest/nastiest location) and it fails, insteada just undoing 2 wires, 2screws and replacing the $15 reg on the firewall, - you'll have to remove alt to replace the ($$ ?) reg that's inside, - if you have the tools and knowledge, if not, you gotta take it somewhere to get it repaired which won't happen right away .
You know it'll fail the nite before/day of an event, so needing it now, means a whole new big $$$ alternator R&R, steada the regulator on the firewall.
jmo

The thing is...the mopar ones fail more than these do. I think in the first 8 years of having this car, I had 2 of them die on me. Then the replacement somehow had a powder coated case so I ended up making my own ground wire to get it to work.

The mopar alternators also make almost no power at idle. And they're kind of prone to having issues with the isolation on the field wires and then either not working or overcharging.

This $50 parts store 12SI has outlasted 2 Mopar alternators and 2 regulators. It's a 3-wire which I still recommend that you do so it runs the system as designed. With electric fans, Aeromotive A340 pump and EFI it's doing well. Only a 78 amp model with an option to go bigger, there were OEM 94A and many upgrades past it. The 6 GA wire helps with the efficiency though I didn't originally have this.