Very helpful email response to my questions. I needed a brake line kit for a Chevy 3500 van, out of stock, so when it came back in Stock I ordered it. BUT the part that I ordered was not the part for 3500. The label on box said 2500 (shorter wheel base). I emailed and was told that I have to modify it myself . Specifically I Figured out that a 20” insert to my brake line fit perfect. They could have just included it so that the use matched the description. And if I knew all that I would have ordered the 2500 kit and not waited for the 3500 kit to come into stock. Otherwise really good quality lines.