I wrote the F-body review on the ZZP site. I just wanted to comment on "stock" lines. I wish I could remember where, but I read a test on rubber lines, and while they all "inflate" under pressure, some were much worse than others. I think they put 1000#'s on them and reported % of "stretch" based on fluid volume. Turns out some rubber lines have performance that is pretty good, while the cheapos balloon a fair bit before the woven reinforcement goes taught. They all met/exceeded the required minimum burst strength, but hey, It's all about good feel and feedback when you pound it.