Okay, I found a couple of pictures. My wife's 500 is in front of my 850. No other way they would ever fit. There are rails on the walls for the bunks, the couch folds up against one wall. If it were a bare, empty trailer, you "
might" be able to squeeze them tight together and against the walls with nothing other than small OEM tires and wheels, but really don't think so.
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Mod Edit: Adjusted photo to comply with the 640 pixel guidelines. When posting pictures in the future please use the Yellow Image icon in the tool bar, paste your photos URL link in the appropriate box and type in 640 in the width box (leave height blank). Thanks