I put a Super 35 in my 97 TJ. Love it.
The Detroit is rock solid, but disengages when turning corners. You will hear a slight clicking sound. It is actually smoother than the Power Trax no slip I had in the stock rear. I modified the no slip and put it in the front Dana 30. It cluncks occasionally, but the traction of both axles locked is worth it.
My TJ is lifted 6.25 inches in front and 5 in rear, with 33 x 12.5 rubber. Tire wear is now less than the stock with the power trax in the rear. Changed the gearing to 3.73 when I did the axles as well.
Got the super from Rusty's in Alabama
97' TJ,4.0/AUTO, 6 inch suspension lift,3.73 gears, Detroit locker/rear, Powertrax No slip/front, Superior Axle Super 35 Kit, Flowmaster exhaust, K&N filter, custom bumpers/winch mount, Warn X8000i winch,custom overhead console with CB, 33X12.5 MT rubber, trail ready with High Lift,fire extinguisher,tools etc.