I'm new to the cruiser scene and I was recently taking my 77' FJ40 4spd. 2F apart for a resto. Basically on the drivers front leaf spring mount/ shakle I noticed some frame rot that needed some attention. Seems small enough hopefully salvageable? so when I began tearing everything apart I noticed an ajusting bracket and a mounting position on the front drivers side of the 2F block. What is? Any other techniques you guys could offer in a frame-off would be greatly appreciated. I am going to take the tub/body off today 