There are probably very percise gear manufacturers, but you have an old Jeep! Yukon's have a good reputation in the aftermarket, in fact, a mechanic on this board,Superdawg, highly recommends these gearsets. I personally am not now using Yukon gears, and would be hardput to remember just what now is in the 94 YJ.

94 YJ, SOA, 2-1/2 Alcans, ARB-front, Detroit-Rear, 4.56:1 gears, Oasis Trailhead compressor, 4:1 Terra Lo, 37x12.50x15 SSR's, 8000 lb Ramsey, & etc.