willie_wonka
+1y
I did this on a 91. It layed 20's with beams. Here is what I did.... first cut the front cab mounts off the frame, then made one out of 6" angle with no bushing and little gussets in order to make room for the longer radius arms. Next I slipped a piece of 2" heavy wall square tube over the end of the stock radius arm and welded it on. I don't remember the length of the tube but I made it so the bag would mount halfway down the now longer radius arm. Then I welded a bushing end on the square tube and pressed a leaf spring bushing in it. I did all of this with the arm still on the truck. Also, I forgot to mention to cut the old radius arm mount off the frame. Then I took the now unused rear spring hangers from the rear end of the truck and used them as mounts for the now longer radius arms. I turned them 90 degrees so the faced the front of the truck instead of down. I Put the upper bag mount as far up under the cab's floor as I could.(you could massage the footwell if you had to, but I didn't) I put the lower on the square tube part of the radius arm lined up under the upper. I used 90 degree fittings and 2600# bags. I originally tried to use 2500's but they didn't give me enough lift. Where the I beams hit the crossmember(on the 91 I did, they hit the crossmember, not the pan) I pipe notched it, as well as the frame where the tie rods hit. The truck layed 20"s, had insane lift, and rode like a lincoln. Hope this helps. Sorry I don't have pics.