Front Suspension Leaf Spring Shackle problems of the 2003 Ford Ranger

The entire front of the bed rusted apart and now has a three to five inch gap between front bed wall and bed floor. Needless to say the front bolts that attach the bed are no longer doing anything to hold the bed down. This results in the entire front of the bed flopping around and bouncing when driving. To add insult to injury the rear portion of the frame when the leaf spring shackles mount are rusted through with several holes visible, and the entire passenger side leaf spring shackle rusted apart and busted off the frame the other day while driving on a state highway at highway speeds. It took me 11 hours to grind off the old rivets and replace the shackle but am unsure if the frame will hold up due to the severe perforation's from rusting. The other side has not compromised yet but it is in really bad shape and will be falling apart in the next few months. Hopefully it wont result in an accident when it does go.