The two easiest I know of:

The AR engineering bracket with denso/Toyota alternator

The Delco CS130 into a stock big block bracket + 3.00" spacer between the alternator and the head + stock bottom spacer. Original application '89 Cadillac Brougham with a 5.0. 85 to 105 amps depending on specific model.

Alot of GM guys don't like the CS 130 because it had reliability issues when it was new (which the aftermarket has probably addressed by now) + Delco made other larger/stronger alternators that bolt right on to their stuff.

The available space in front of the head is a limiting factor, and the output stud is close to an edelbrock head with the cs130 and older mopar/denso.

I tried early 90s denso, I believe 1991 ram, and felt it was too close to the cylinder head.

Not sure how important it is, but you might prefer something that can be sourced from the local parts store rather than being stuck with powermaster or some other specialty vendor's product?