Thanks for the tip on Alretta Truck Parts in Framingham, Ma. (508)788-9409. My Mechanic was able to find front wheel cylinders for my 49 1.5 ton Chevey 4100, but could not find rear wheel cylinders. He suggested re-sleving both existing ones for $400.00. I contacted Alretta and spoke with Geoff. He new exactly what I needed (I hope) and got them in the mail that day for $81.00 each. I guess we will see if they are the correct ones soon.
