I bought a setup from extreme outback.
looks just like the "8a" setup on the link supplied by Dane.
It takes me about 7 minutes to go from 9psi to 80psi on a stock tires. . 245/75/16
Takes only 1. 5 minutes to go from 9pst to 45 psi.
It does slow down a lot after 40psi.
The only problem with high pressures is that the head gets really really hot . I originally screwed a quick disconnect into the head and plugged my hose in to it for testing. But at 70psi my hose blew because of the heat.
I made a coil from 3/8 copper tubing. I have that attached to the output of the head and then to a metal filter/seperator/dryer, which is what I plug the hose into. For now my 12v compressor is a portable setup. I plug it into my winch 12v connector. I have all the other things to make it permant on board air. . just havent gotten around to it yet.