There is a tag on the diff housing that is held on by the diff cover bolts. The gear ratio is always on that tag. It may be a little tricky to read. It may look like 04.10 for 4.10 gears. Your choices would be: 3.55, 3.73, 4.10.
Big Red, '99 Golden Eagle TJ, Total 6.25" RE, 1" Body, 4.0+Turbo City2, AX15+Hurst, 231+4LO+RE Whack&Tap, D30+ABR+4.56, D44+Detroit+4.56, 37x12.50 GY MTR, Yes, they rub all over, I like it that way.
'93 YJ, 2.5, 5 spd, shackle lift, 31" Boggers, 4.88, Lock Right ina rear, True Track ina front, known as "Lenny." Built by the five handed monkey that lives under the stairs, with lots of used parts
When your Jeep is lifted, generaly, it will NOT drive like it used to.