FYI,
I took the topless 81 K5 up to WIC in Summerton, TN this past weekend. The place is just outside of Lawrenceburg. I was really impressed with the way the truck performed. My truck is still pretty well stock but it climbed all the hills.

Nice off-road park with over 700 acres of trails. I stayed off the extreme trails because I had to drive mine back home.

I've got their URL around here somewhere if anyone is interested.