GenLightening
Yeah, it's a CHEVY!
I scrounged through the rubber mount selection at the Kenworth dealer and found some that I made to work. I can take some close up pictures of the setup I rigged in there if it'll help you any.I rigged them with long bolts with a number of spacer washers on each side so I could adjust the angle of teh box to adjust the ujoint angles if needed, which came in handy. I was able to get a vibration out when I first installed it by moving a few washers
Since I'm picking up a brownie now, can you send me some pics of your install?