I have a used KP Components 6 link suspension setup off my buddies S-10. Wasn’t on the truck for an entire year, maybe 2000-4000 miles. He stripped the truck to re-build it and then ended up selling it. I bought the 6-link from him at that point. It is complete minus one of the bushings and one small arm. You can get a replacement arm from suicidedoors.com for like $50. All the other bushings and everything are in great shape, could use a coat of paint.
This is a $1600 suspension set up, you can check on suicidedoors.com: Here is the link:
http://www.suicidedoors.com/4-link-kits/kp-components/kp-components-s10-6-link-cantilever-kit
Here is the pic of what you will be getting and a pic of where the bushing is missing off the one link. You can get these virtually anywhere for dirt cheap. In the pic you can see the dog bone is missing, these were set up for 20s, so if you are running different wheels you will need new ones anyway.
I am asking $800 + shipping.