There should be a tag held on by 2 of the diff cover bolts. It should also be stamped on the outside edge of the ring gear, or you can count the number of teeth on the ring gear and pinion and divide them to get the ratio.
$ Quality isn't expensive, it's priceless! $
94 YJ, 2.5l, BD 1" mml, sye, 4.5" rubicon express extreme duty, 1.5" shackles, 1" bl, dana 30-4.88 and lockright, 8.8- 4.88 and spartan, tera low 2wd, 35" km2's, custom cage and rock sliders, ramsey pro 6000 winch....