Im currently have a rough country setup under my 99 cherokee. I am switching over to a rustys 4.5 incher. my question is how much net lift is accomplished with the 4.5 inch package from rustys? I have heard some people say 4....4.5.....or 5. Also, besides the new driveshaft, what else will have to be done? I know there are always hidden costs when lifting a vehicle. THanks.