it is about 5-10 miles. when you get to huntsville. you will see a Chevron on the right hand side of the road. Go about a 1/4 mile past there and you will see a sign telling you to turn right at the intersection
If you keep going past Pineview and turn right at the Monte Cristo turn and keep going about 12-15 mi. you will find the Dry Bread ATV area. There are a bunch of trails to ride 4-wheelers up there.
Another tip, in case you forgot. Cleanliness is next to godliness. Make sure and clean your joints before you weld with a scotchbrite pad or steel wool.
don't worry about your oil being black in your diesel pick-up. It will do that even after 10 minutes of running. It is just soot. Change your oil regularly as per manufacturers specs and you will be fine.
Chuck the nails up in a drill to polish them. Just the end that goes into the car body and use emery cloth until you are using the back side of the emery cloth.