Hy Verdigris, welcome, I come up with Raybestos MK148 for your truck, this is a repair kit for your master cylinder. As Santerre has said you could always have your master cylinder sleeved if it is pitted too badly for a simple honing to clean it up, the master cylinder assembly does not appear to be available any longer. RockAuto has Raybestos MK148 available for $19.16, hope that helps.
