I used a York compressor(SC206?) from a VW Jetta as it was smaller in size and easier to make fit. Probably pumps a bit less air but had to compromise...
I bandsawed and rewelded the Explorer p.s. bracket to help fit it in.. Used the pulley from the Explorer a.c. pump. the clutch bearing was the same as the york so that helped...
Its been a couple years so the details are getting a bit hazy...