I traded a buddy of mine some Toyota parts for a brand new CS130 he had laying around but never used. It did have a serp belt pulley but we swapped it with a v-belt pulley off a junk alternator he had laying around. All GM alt pulleys are interchangable as far as I know. As far as the wiring I just wired the Toy "excite" wire(yellow) to the "excite" wire on the alt.(brown). This could be different with your year truck. I also just used the factory charge wire from the battery directly to the Alt charge stud. I refered to this link a lot.
http://www.pirate4x4.com/tech/billavista/Wiring/Part2/I'm pretty sure the Oasis is just a York thats driven by an electric motor. Check out my build thread for the York install on my runner. It was super simple to set up and puts out some serious air. With the 3 gallon air tank I have I can run an 1/2" impact gun no problem. It fills 3 tires in the same time it took my buddy with a viar electric with a 2.5 gallon tank to fill one tire. I have less than $80 into my OBA setup including the compressor and all the plumbing.
