Here's what I have done to extend them. Just need to clean them up and paint them.
I cut off the mounting part for the pads from another set and welded them. I may get rid of that center part loop if I need to but I made sure I measured them were I need them. I'd like to leave them in for strength but without them, I will have a lot of adjustment. Also doing it this way I will not have to pinch my fender in to clear the arms.
If it works great I will see if I can find another set and do the same to the front. I've got one pad that rubs the tire a little but the other side fits just fine? I have removed them and adjusted them every which way possible but never been able to get that one side to clear the tire completely.
I am running out of time and got to go to work soon so I will finish up tonight.