Alternators-adjust my thinking

On an original Chrysler alternator—whether new or used—the part number is stamped on the rear housing. Sometimes the amp rating is, too, but if not, the P/N lets you look it up. All bets are off once the alternator has been "remanufactured" (thrown together with mixed-up parts).

Cars with factory-installed 60- or 65-amp alternators got (much) heavier-duty charging system wiring and upgraded ammeters.

Cars without factory-installed 60- or 65-amp alternators, whose owners toss on big-amp alternators, eventually get wiring and ammeter upgrades to repair the damage after a high-amperage event (dead cell in battery, giving or receiving a jump start, etc).

Old Car Parts Northwest has a large stock of NOS Chrysler alternators. I know they have a lot of '72+ squareback items, not sure what they have in roundbacks.

3000 010 is the part number for a 1968 60-amp alternator with pulley, the service replacement for original-equipment alternators with three different pulleys: 2¾" double-groove (№ 2444 476), 3" double-groove (№ 2095 059), and 2½" single-groove (№ 2444 478). These pulley numbers are stamped on the front face of the pulley's hub, so if you are working toward a high-correctness resto, you'll need the correct pulley. The 1968 60A alternator without pulley is 3000 011.