Patch panel for 1968 barracuda

Hi All,
I'm looking for a patch panel for a 1968 barracuda, drivers side, behind rear tire. I've tried the big companies: Laysons, Year one etc.. It looks like I might be down to getting a 1/4 panel and cutting the piece out. That would be $160 for the panel and $200 shipping!! Does anyone know of anyone that makes them or a better solution. It's at the body shop and I want to do it right. Thanks for all your help. I'm in Southern California
Glenn