K20 chassis $1200 (has cab, title, SPID etc)
https://lansing.craigslist.org/cto/6116669076.html
71 K10 short fleet
https://sfbay.craigslist.org/eby/cto/6097365286.html
One odd thing about the listing, seller says will not sell without the extra parts in the ad, and there are lots of them. If you like the truck and want all the parts (some BIG parts, a motor, later model stuff, extra fenders, doors, etc), then it may be a great deal for you. I like the truck!
https://sfbay.craigslist.org/eby/cto/6097365286.html