I have some 4x4 mud flaps that have been sitting around since about 6 months ago. I drove around with the front ones for about 5,000 miles then took the back ones off at around 10,000 miles. The hardware is included, but it's missing a few of the special expander push pins (for lack of a better sentence). I have ALL screws.
All four are in good condition with few normal curb scrapes.
I'm selling all four for 145.00 shipped.
Here's some photos: