We agree with you regarding an engine-driven compressor. It will be nice to have a virtually uninterruptable and endless supply of compressed air. Once Brad gets the brackets together, we will be adding one to our AV. It will be nice to have air available all the time. We've got a York compressor sitting on a shelf just waiting to be installed!
I've used the Powertanks for the last couple of years. I've been able to air 12 tires (36X12.50's) up to road pressures and still have some left over. The portability is very, very nice. If you talk with Steve, tell him that we sent you his way.
You know, we just happen to have a '71 K5. I built it up in '89. It has a corporate 14-bolt (big drum brakes) with a Detroit Locker, a Dana 44HD (disc brakes) with a Track-Lok, 350, SM465, NP205, family cage, 4" lift in the front, 2" spring lift (no blocks) in the rear, 315/75R16 tires on aluminum rims, soft top. The body is a bit rough as it has been on it top once. Much fun.