I've been searching for a hitch to pull a small popup trailer with our E320. HiddenHitch has a model 90648 for a 1997 E320 but don't list anything for a 1997. Would anyone have any idea if it would still fit a 1997 or would there be too much different in the rear frame etc for it to fit. Anyone have any other advice on putting a hitch on an E320? Thnaks!