First my brake line rusted out going to rear of truck, replaced one year later truck running rough diesel. Found lines from front to rear also rusted between line and frame did not see this when brake line was replaced. Front lines is a factory order part still waiting after a year on back order. rear line I have sent several back from different companies due to wrong size. Short. I have a 1995 C2500 ext. cab with 8 foot bed. After pulling my hair out I find out I have to order lines for a K2500 to get the right ones Thanks GM