The lower rear quarters weren't to bad. I started of with my 4 1/2" cutoff wheel and cut around the quarter panel about 1.5" from all sides front, back and top. Take wheel off. After the majority of the panel was off I took my spot weld removal bit from inside the wheel well. After using my spot weld bit all the way around I then took my air chisel and pried in between the 2 pieces of metal. This worked very well. Prep area well. While the old panel is off I then took a 5/32 bit and drill through the top of the upper quarter because when u put the new panel on you can weld from inside the tub through the holes you drilled, (drill maybe every 3 inches) Good luck let me know if you have any other questions