I’m putting a fresh 2F into my 60 and the smog pump has been deleted, and a smog pump, pulley, or something is needed in this position for water pump operation (if the intention is to also have power steering). Actually I have a pump but it’s of questionable condition and I want something of use in that position so I’m sticking in a second alternator. I stopped by the salvage yard to see what was available and what I selected was a Delco CS 144 from a 1999 Suburban. There is a lot of variation with the alternator mounts, this one had typical ears on top and bottom, but it had a pulley for a serpentine belt. Got it for $45. For starters here’s a comparison of an F, 2F, and the CS 144 alternator. The F alternator plays a role in this; it came from a ’69 FJ55. The CS 144 is considerably larger than the 2F alternator.