I got the adapter box mounted in the basement frameworks. For now I'm just getting the hardware in place. When I do the final install, I'll put a rubber shim between the frame rails and the mounts to attempt to soften vibration a bit. I simply don't have enough room to put in some big squishy isolators. I'm hoping the woods used in the floors and walls will help dampen noise as well. Yea, I know, hope springs eternal. I'm thinking even if there was no isolation it can't be as bad as the window A/C next to my head rumbling the wall at night in my house. I got accustomed to that so this should be a piece of cake.
Here's the box installed before attaching the A/C.
Next bolt on the A/C unit.
Then install the service cover to protect the condenser foil.
When I do the final install I'll shorten the power cord and extend the control panel wiring. For those concerned about the fan being able to blow up into the cabin I'm going to install an inline booster fan wired into the blower circuit. This is on the shaded side of the bus so the A/C unit is in the coolest location possible. The solar panels will shade the center of the roof and I'm looking into ways to create a second skin with an air gap on the exposed part of the roof to reduce heat load.