I rejiggered the whole table, it's a lot more readable. http://wps.com/AMC/AMC-brakes.html Still missing some years. I now have a 69 TSM, and a 71 (thanks Frank). I'll fill those in soon. Table is much more readable. I put all the TSM specs together, and in blue; that data is trustworthy pending typos etc. The read aftermarket data, well take with a grain of salt. It's a real PITA to work out, as if you look up some specific car, say "1973 ambassador" you get vague and misleading results, like, it will list wheel cylinders, but not say if it's for 10x2.5 drums or 10x1.75 drums, so who knows. Sometimes they (NAPA, Rock) list parts with specs different from the TSM. I wish I had more than one Raybestos catalog!!! Sometimes there's more than one part with the same "specs" eg. a 10x2.5" drum, that may have differences that don't matter performance-wise (eg. finned single vs. double, etc) or that do matter (different size inside hole, maybe AMC15 vs AMC20? front vs rear?). No way to tell without either the part or good data. Factory part numbers don't help, as AMC would assign a new part number to distingish parts that we as drivers wouldn't care about (eg. type of finning on drum). So unifying parts fit is remaining elusive, but I think I have some simple approaches to fix it. Does anyone know: ** Do all AMC20's have the exact same axle hub? * Do all AMC15's have the exact same axle hub? Mainly, is the center hole size the same? If so, I can make the unified list. _______________________________________________ Amc-list mailing list Amc-list@xxxxxxxxxxxx http://www.amc-list.com/mailman/listinfo/amc-list