yes I have one, pretty beefy, uses 1350 cv u-joints. I believe it's a 34 degree drop. I run a FS 9" with about a 11" lift and unfortionly It still didn't drop enough for me. So i broke down and bought the rev. 9" from Currie with 35 spline axle shafts. In fact just yeasterday I blow the rear drive shaft yoke to pieces.
But I can't blame High Angle Driveline, Becuase I was blowing caps all the time until I got the high 9" from currie. So the yoke on the DS was starting to get stretched out.
In my option. They make a good shaft.