I've seen many threads on the contact point for the front bump stop being rusted out. There are YouTube videos on it too. Yes, dumb *** design. Owning a cheap Chicago Tools 170 Mig Welder from Harbor Freight comes in handy though.

My truck was no different. The bottom was gone so the contact pad was useless. I cut out the rotted parts with a grinder and an air cut off tool. I cleaned the area up with a needle scaler. I measured up what I needed to do and fabed a bottom section from an old section of frame I had from rebuilding the back half. I welded it up and sprayed all the new clean metal with cold galvanizing, old rusty areas with Rustoleum Rust Converter and top coated everything with Rustoleum Satin Black. It is a tight area to weld and I just used scrap metal I cleaned up so the welds aren't neat but I got penetration so it will hold. I did not weld the back partly because I did not want to lay under there and weld, but I will go with the excuse that it needs to drain. Yep, that sounds good.

No before pictures but you know what it looks like. Plenty of them on the web if you Google it. Here is after.
Passenger side (you can see thebig glob where i filled in a hole that was in the frame metal I used):


Drivers side (I got the wheel back on before thinking about a pic):