Only experts need apply...

It looks like an a/c compressor could tie in with the ps pump belt. I'm not sure what the stock setup is. I haven't been able to find a picture of the stock routing with ps and ac.

My radiator is leaking and will need replaced anyway. Is there any advantage to switching to the 1970 and later setup? Seems all the aftermarket setups require 1970 and later water pumps.