Ok, well I guess someone was a really good craftsman. Like I said, they fit really well, and look like they belong. The rear ones especially. The original marker lights covered the bolts. There are 4 voids in the backside of the original marker lenses, and the bolts line up with these perfectly. The only modification to the bed is the bolt holes. I use these tie-downs all the time, very handy.
There's also an aftermarket second fuel tank hidden between the bed side and the frame. The filler neck is tucked away in the wheel well just in front of the back tire.
So I guess my truck is a little unique.
![Cool 8)](./images/smilies/icon_cool.gif)