Mat,. Has someone removed his AIR pump without replacing the bracket?
Hard to see on my phone, but without some kind of stay between pivot and water pump the alternator is always out of line.
Going serpentine is a big job that necessitates pulling the power steering pump, changing crank pulleys, alternator, etc....
An aftermarket alternator bracket is available and is much less work.
Jim,
Lil'Red is a '87 F250 HD, 4.10's, 1356 4x4, Zf-5, 3G, PMGR, Saginaw PS, desmogged with a Holley 80508 and Performer intake.
Too much other stuff to mention.