You didn't say before that it was for sale.. I would pass on it.. that amount of rust makes it not worth while. IF you already owned it and were trying to save it that is different but since you have no money in it now then avoid it.. IT WILL BE A MONEY PIT
2004 Chev Silverado Duramax optioned past the max. 2009 Jayco Eagle 308 RLS 765 watts of solar, 6-6 volt batteries (696 amp hour), 2000 watt (4000 surge) whole house inverter.
140 days boondocking in 2016
211/2015, 196/14, 247/13, 193/12