Ok, I now have all the necessary components to change out my old compressor. It’s located upfront adjacent to the driver side wheel. The new compressor is VIAIR 444C. I plan to build ramps out of 2 x 10 boards to elevate the front for better access. My only concern is once the coach is on the ramps and release all the air, will I still have enough room to crawl under the coach and.. how safe is it with no air in the tanks? Has anyone ever done this before?