I have a 91' f-150 2wd, that needs the raduis arm bushings replaced. After searching the net I have only come up with this info. I'll have to remove the rivets that hold the brackets to the frame and replace them with bolts. Question is what size and grade bolts? Has anyone done this and what should I be watching out for?

 

I have replaced both of my radius arm bushings and have never had to take out the actual mount. If you take the bolt out on top of the coil spring and holds it in, remove your shock, you should have enough room to move the entire arm forward. If you still cant get in there, remove the bolt holding your I beam in and the entire structure will drop allowing to you replace your bushing. I found that this way was much easier than taking the time to drill out rivots. It should only take about an hour or so by yourself, Good luck!

 

Thanks for the reply. I was hoping not to have to remove those brackets and I want to replace all the bushings anyway.