JohnZ built a Grand Sport Vette many years ago. With AC no less.
These are custom pulleys that he had made for it and 2 power steering pumps for an S10 (IIRC).
W/p are 1 3/4 diameter (SWP) pattern. 3 groove is 7" and 5.5", 2 groove is 6".
PS pumps come with a bracket and 2 pulleys.
Pay for the ride, say thanks to JohnZ, and put them to use.