brownbear,
The flaking and delamination of the inside frame rails is visable inside the inspection hole as viewed though the rear wheel well opening. ITs piled with at least 1/2 of rust flakes inside the tube. Idealy, it would make sence just to cut out sections of the frame and then weld in...
I have some holes that have recently apeared in the rear frame of my bj60 and was curios if I can save a substantial amount of time just cutting off the rear frame behind the corrision and replace it with another part of a frame or just take the body off of it and replace the frame?