What size trutrac would I need for my liberty. If anyone could provide a part number or more details that would be great.

front or rear?

Rear you need the one for a Chrysler 8.25 with 3.73 gears
front you need the one for a Dana 30 with 3.73 gears

For the rear, get the 29-spline version, not the 27.

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LOST # 633
'05 KJ 3.7L/6spd/241 245/75/16 MT's
'88 MJ 4.0L/AW4/231 SWB HPD30 & trac-loc D44 w/3.73's
A dirty Jeep is a happy Jeep

the only locker i found to fit into the front Dana 30a is an ARB...but yes a 29 spline for a Chrysler 8.25 3.73 gears i beleive

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02 Jeep TJ Sahara, 33's locked up front
03 SAS KJ 0n 35ish boggers(Sold )
Petersens 4wheel: http://www.4wheeloffroad.com/featuredve ... index.html

The TruTrac 30 diff works fine up front, the only difference between the 30s in the length of the pinion gear shaft.

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No one knows as much as all of us.

I installed one in the Dana 30A and it works great. You can get one from Quinn at All J Products he sold me the one I installed. I also purchased new bearings and shims from Randy's Ring and Pinion. Both places are great to work with.

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2002 Silver Sport 4x4 3.7L-5 Speed NV3550 Manual Transmission-NV231J TC-Frankenlift-AllJ Interior Rack-ARB Bumper-Hella Driving Lights-Electric Trailer Brake-Moog LBJs-JBA 4.5 UCAs-Detroit Trutrac (Front)-245/70/16 Dueler A/T Tires-Amsoil EaA201 Air Filter-Tom Woods Custom Front Drive Shaft-Rock Lizard Gecko HD Roof Rails-Onboard Co2