hi im a new member we have got a europer 500 van can someone help me our boys are 13 and 15 but love caravanning now the top bunk isnot big enough for our 13 year old as he bangs his head on the lokers above him . and we dont get any peace when they share the bottom bed.we want to know if we can convert the back dinnet to have permenet bunks with the storage under the beds we need to know if it is possabel to do ? can any one help as we can afford a new van as yet with the beds like that