I have a '29 briggs body 4 door that appears to be very original. The front fenders do not match. One has a different angle on the inner panel than the other. As a result, the headlights don't center with the radiator. I have tried different fender braces and it makes no difference. Could it be that one fender is an A and the other is an AA? Also the original upholstery is shot. Should I replace it or keep it to preserve the "original": look?