Yes I put one on my 2012 Leprechaun (2011 E450 Chassis) Had no problems with one exception. I should have taken the time to get it lifted higher so there was more room to work when under it.
I will be working on it in a few days. I could photo the frame bracket if you are having trouble with something.
2012 Coachman Leprechaun 319DSF (E450) (32ft.)
2011 Chevrolet Equinox 4-cyl. AWD - towed
Souris River Canoe leTigre Quetico 17 - for fun