Speedo Pinion... where do I go now?

Gonna put some 31's on my xj, and am going to need a 27 tooth speedo pinion but my local Jeep STEALERSHIP doesn't even recognize a 27 tooth, which for some strange reason doesn't suprise me.

Question is is... Does another Jeep style have a 27 tooth, or where do I go to get one?

27 tooth???

When I went to 31" tires, I put in a 32 tooth (or was it 34?).

Check out the chart.
http://go.jeep-xj.info/HowtoSpeedoGears.htm#chart

Than check out M.I.T. They have a ton of gears for speedos.

619-579-7727 is their number. They help me find a gear for mine. Juice

you can also get the gear from the stealership but just look up other trucks of the same year with the same transfercase i got the gear i needed for 33 with 307 s from a ramcharger