This is kind of a newbie question and i have tried searching for the answer on here but does any one have any links to explain the need for a cv drive shaft? i have an 03 rubicon so there is no slip yolk, and i am planning my build before i even buy so much as a sticker. so here is what i am in need of, i am new to offroading, so an explanation of all the things that is necessary when lifting a jeep at least 4in and why, what drive shaft angles to i need to achieve and why? pretty much any in-depth write up or link or info you that will give me an understanding of how the suspension and drive train work and are affected would be great. I know i am asking a lot sorry just new and trying to learn as much as i can so i make sure i don't miss out one anything my goal is to build my jeep in stages but i need to make sure after each stage i am not leaving any huge weak spots like lifting it with out upgrading to a cv drive shaft like i have been told i need to but i would really like to understand for my self all i need to do and why.