If you find a counter guy who knows what he's doing, I've found that NAPA, CarQuest and Federated can get their hands on just about anything.
Case in point - when my parents still had their 1939 American LaFrance fire truck, CarQuest was able to find brand new wheel cylinders for all four wheels. Talk about obscure parts for a huge truck...
Last edited by GMCpanel; 03/22/2012 6:09 AM.