The Atlas 4 really is a thing of beauty. It looked even better mounted under our JK and getting closer to being drivable. It also took up considerably more space. While we got it in there without losing any ground clearance, room between the tub and the transfer case was much tighter. It was not tight enough to cause any problems, but it did make for a very snug fit for the shifter cables, and it is something to be aware of if you have wiring or any kind of plumbing running up there.