Congradulations on the new truck. There is something special about these crew cab K30's, due to mostly IMHO that not a lot of them were ordered, back then ordering a truck with 4wd wasn't a fashion statement so not a lot had 4x4, and most of the owners that ordered them bought them because they needed a 1 ton 4x4 and put it through the paces....usually ending up with a delapitated piled of junk after 15 years of 1 ton 4x4 types of use.
I love seeing great finds like that, I bought my '81 last winter in the similar condition as yours..... a crew cab that had managed to survive with having a good one owner for 20 years, and was well taken care of in that time.
my K30 crew was a weekend only RV pulling camping truck, served doing this for 20 years, so that is what kept it in such good shape.
Whats the story on yours? How was it spared so well? Shoot, you didn't mention what year it is, but it's close to 20 years old by now.