Got one of these Comming in for some fabrication work to convert to a camper. Needs a new rear crossmember at same time, guys been told it's a body off job by a so called expert. Is this "expert" talking nonsense? Looks to me like it's a cut the floor out job (which isn't a big issue bearing in mind other work that I am going to be doing to it) Anyone done one? Done loads of series but never a fc.