mounting details

So I'm building a hybrid foamie/plywood frame body with a foam/plywood sandwich floor. My thought is to isolate the through mounting holes with polyurethane bushings sealed in epoxy (to keep from crushing the foam/seal). Curious to see if anyone has tried any dampening between the frame and...

OK, I'm on a roll with the questions... We have a new 2013 SS 3050S MH with the over-cab entertainment center option. We also have the Magnadyne M4-LCD in-dash DVD/iPod/USB unit for playing video and audio. When video is played, it's supposed to be piped to the TV above the cab. While it does...