Does anyone have a copy of a Raybestos clutch catalog (or friction material)? I have searched high and low and can only find catalogs with brake linings. I have an NOS 15" clutch disc that has a 1 1/2" 10 spline shaft. It's marked Raybestos VL1517 but I can't find that number anywhere. I believe it may be for a 50's vintage big truck. Any help would be appreciated! Thanks, Tom