This is a question for some of the Mopar guys out there. Have you ever used the firewall patch panel, pn 160-41LR (for 73 Cuda) from Sherman? I call it a lower cowl panel and it is the piece that fits just to the outside and in front of the door hinges. How was the fit and finish? Any tricks to the install? Is it worth buying or should I just fix the original piece? Thanks for any suggestions.