Yeah,my '81 G-10 looks identical to that door..(well,almost)..
$899 for that camper van!..wish I was in Portland..you never see ANY vans that old here,unless you look in my yard..
It reminds me of the shape mine was in when I got it in 1990 for 500 bucks..only thing "wrong" with it was the tranny wouldn't shift out of first gear,turned out to just be a stripped nylon govenor gear...thing was only 9 years old and still very decent too..had 138K when I got it too,straight six 250 & TH350,3.08's ..
Stopped driving it in '03 when I got the 82 K2500,I had put a 307 V8 in it and a 2.73 rear the year before too...I miss driving it,it was cool having something you could sleep in and yet drive like a car,not a greyhound bus sized behemoth..I hoped to put it back on the road again,but lately I'm not so sure it'll ever be resurected..getting pretty rough from sitting..