The problem with more than 2.5" is something that I learned recently while trying to go over a ditch, the left wheel dropped so much it locked over the metal. I have never broken a CV, but had a hard time even winching the Kia with my other vehicle because it was locked. Now I know the importance of lowering the diff when lifting too much.

1985 Toyota 4x4 4Runner. 1989 Suzuki Sidekick 4x4.