Is there an OEM CS130 side post alternator

[Chad-1stGen]

So I've been having charging issues with my Vintage Front runner Alternator. This Alternator is made by Tuff Stuff but after trying to contact them for a month and getting no response I figure its time to find an alternative replacement.

The trick is that with the front runner setup I have to run a "side post" alternator. meaning the battery post protrudes out the side instead of the back. Is anyone aware of an OEM application for this style or is this purely an aftermarket invention?

I know I can get another side post from Tuff Stuff or Power Master but wanted to see if I can get a local parts store source for future reference.

Thanks