Many, many years ago, (too many to remember), I began my car hobby by restoring C1 and C2 Corvettes, along with restoring first generation Mustangs and Shelby Mustangs. Chevy and Ford factory assembly manuals were readily available in reprints. They were extremely detailed, right down to part numbers and even the finish on hardware. It made life easy. I have never seen anything close to that for MB.