I have a question for the auto body gurus out there. My drivers side rear panel is rusting at the top of the wheel arch. I have a parts car so I was going to cut the panel from there and cut and replace mine. My question is, would it be better to take the panel all the way up to the window opening for ease of repair and appearance. The other way I was considering was to go about 1/2 way up and cut there. Let me know what you all think Thanks.