I've got a line on a 94 grand cherokee with the 6 in it. The guy claims it has 6.5" of lift on the front and 7" on the rear. What should I be looking for in terms of problems with driveline angles and other such things. it has a lot of miles on it, like almost 200k but the motor has been rebuilt about 50k ago. all the miles were highway from the previous owner who drove back and forth to ST George like once a week. anyway what should I be on the lookout for.