I use the Viair compressors on all the vehicles I put air ride on. Currently on my 68 Suburban with air ride, I have a pair plumbed into two 5 gallon tanks which not only airs up my Accuair air ride, but I added a port on one tank to plug in an air hose for tires..
These work great and can handle a ton of abuse..
Find yourself a friend, and purchase them in a twin pack to get an even better deal.. Most shops that deal with air ride offer decent pricing on the dual packs..
Retired Air Force