Most makers tell you no more that 4 inches
You will need to measure both points and get the proper drop receiver
Your dealer should be able to measure the MH or a like one for you
2012 Winnebago Journey 36M Cummins 360
2014 Jeep Cherokee
492 Campgrounds,107K miles driven in our Winnebago motor homes and 2360 nights camping since we retired in July 2009, 41 National Parks