Thanks for the compliments, Mike. I have no noticeable driveshaft vibrations. Good eye, though, on the rear driveshaft u-joint angles. In my infinite wisdom during installation of the rear axle using deuce front springs I decided to flip the original factory shims around. It looked good at the time, but the angle is definitely off. I will eventually flip the shims back to the stock location for a much smaller angle on the rear u-joint. That should match the u-joint on the output of the transfer case. The Black Rock Fab lift kit doesn't come with any shims. If you decide to use a set of deuce front springs for your rear axle I would just use the factory shims.