\i just did the brakes on my ton with huck, i got cylinders, return springs etc from Jim carters truck parts and all new steel lines and hoses are availible from Raybestos at your local shop, you might be able to find the cylinders too. I kept the stock master cyl but installed a brand new one from Raybestos. I put kits in my rear cylinders but it wasn't worth it as they had some pitting and leaked again in a month so there all new now. The master is 1-1/4 bore so if you can find one from a newer truck with that bore its just mounting and connecting.