Hi everyone, new here. I have a 98 XJ classic. Only has a 6.5 long arm lift, rest is stock. My question is the tranny has begun to slip, has hesitated going into reverse since I purchased it, which has only been about a month ago. I also have a 2000 Grand that I am building, would the tranny out of the Grand fit my XJ. They both have 4.0. Believe the Grand is a 42RE and the XJ is a AW4. Will they interchange?