NAPA has them. I would want a new one from a parts store and not a used one that has been setting for decades in someones garage. https://www.napaonline.com/en/p/NOS13418
Ordered the NAPA # NOS13418. Thanks mike! Should get it tomorrow. Not available from the dealer. 9" brake package takes a different seal from the 10" brake package. Thanks for everyone's input. As usual, FABO members are the best!!!
