[47silver]

My experience a couple years ago replacing an alternator via a parts store entailed 3 trips to the store and they still did not get it right.

I also learned that rebuilt NAPA ETC alternators use soldered diodes and not the pressed diodes that are original factory. Look inside your factory alternator and you will see the pressed diodes. Look at a rebuilt and you will see the black diodes dangling on soldered joints waiting to vibrate loose. The soldered do not last as long and are not as reliable. 2 of the rebuilt alternators i received where faulty out of the box due to bad solder joints.

I also learned that there are different size fan shrouds that take different size alternators, apparently with the same part numbers. My 75 uses a fan shroud with 5R designation which is different is some way than the other "X"R designations. If you alternator does not fit a 5R fan housing then it will sit too deep in your fan housing and your fan will hit. This problem happened to me so it was my last trip to the parts place. By the way they specialized in foreign parts.

After 3 chances i said forget it and opted to have my original alternator rebuilt.
So I took it to Stellar Generator.
Mark at Stellar, showed me the difference in diodes, and ordered heavier duty ones for the new alternator. He also sent the stator? out to get rewound.
the upshot is i have an alternator that will last 50000 miles.
I also picked up another 75 fan shroud (it is a 5R) which had an alternator attached and I had Mark rebuild that one too. Just in case.
Last: you need longer bolts in your alternator to make it easy to reconnect the air deflector,, an alternator shop can get these for you, they wont come with a rebuilt from NAPA.
If you have the time, get it rebuilt locally, explain you want the pressed diodes not soldered.
If your removed alternator has soldered diodes then it is a rebuilt one.
Mark explained that the pressed diodes handle the heat better and do not vibrate loose so they last longer.
The second alternator did not require stator work so it cost about what you will pay for a rebuilt one from NAPA, but his work is first class and he knows his starters and alternators.