Body shop recommends doing patches before you remove body,take care where wooden blocks and rubber pads are, make sure they go back at the same place take pictures so you know how they go.when you put body back on you may have to adjust it with shims to get door to close right.you will have to bolt the body down tight to make sure you have it right.I just completed my 33 coupe body, I put patch panel on before it was taken off .good luck