Here ye! Here ye!
I bought a Haldex air dryer for my bus, but it's way, way down on my list of things to do to my bus. I paid $40 for it. It is used. If someone can use it before I do, you can have it for the same price. If you want it shipped, I can send it UPS.
Also, a buddy sold his truck repair business and has been selling decades worth of stuff that he has picked up. He has a massive Rockwell rearend with 4.11 gears. The axle housing is included with new brakes. It needs a new carrier housing. He wants $550. I don't know if it fits in a bus or not. It is a R-170. If anyone is interested, let me know. It is located in Lathrop (near Stockton), CA.