I noticed when installing the lift they were at a pretty steep angle but when lowering the car back down the angle was not steep at all. The only time there would be a steep angle on the cv joint is when one of the front tires are off the ground. I have taken my rig on some pretty rough terrain and has done pretty well. I am making a hitch mountable tire rack for it since I can not fit a spare underneath anymore. I hope to have it done next weekend I will show you pics when I'm done.
1st- 1994 Jeep Cherokee
2nd-2000 Jeep Cherokee Sport
3rd- 2008 Jeep Liberty Unlimited 2.5 JBA Lift, 32" goodyear duratracs
Current- 2011 Rubicon Unlimited