 Re: 1993 ford econoline winnebago dayvan gross/net vehiclewe
Both vans sound like your basic "conversion shell" which is one that is sold without an interior for the customizer market... they basically then become one-offs...
and as far as adding in the wheelbase to the mix, it's possible they are a version that was never offered here in the States... that was, and remains, a fairly common practice... for example, Ford made a version of the 351 Cleveland motor for Austrailian trucks that had very much beefed up webbing in the block... highly prized here in the States in drag racing and offshore powerboating circles...
the GVWR sounds about right for a six passenger van... | 
