I recently bought a '86 K5 and have been out putting it through it's paces in OKC. There is a a lake here that is completely surrounded with trails. Obsticles range from rudy-poo to mind boggling! Rain is a bonus, because mudholes appear from nowhere. My Blazer is pretty close to stock. A new 305, heavy duty shocks, and 31x10.5 15 mudders are the only things I'm sure of. After crawling underneath it last night to replace a rear end pinion seal, I'm not so sure. It has been converted to manual hubs. I am pretty much a novice or rank amatuer at best, but firmly believe God made four wheel drives to be used as such. Anyway, the trails and scenery at Draper Lake are excellent. Rock, sand, mud, and beautiful Oklahoma "Red Dirt" abound everywhere. I have spent 3 1/2 days running trails and have just touched the tip of the iceberg. The things I have learned from running these trails are 1. I need a winch, BAD! 2. There is no such thing as too much ground clearance. 3. Clay mud is thicker than molasses in Winter. 4. If at first you don't succeed, drop it in 4 low and punch it!