Add it yourself...
Installing Factory OEM Electric Lockers into an 80 Series Land Cruiserhttp://www.bajaoverland.com/elocker.php
Welded Carrier Sectionhttp://www.ih8mud.com/tech/woody/welded.html
80-series Center Diff Lock Modhttp://www.ih8mud.com/tech/80centerdifflock.php
Grey Wire Mod - Lock Rear Diff in 4Hihttp://www.customtacos.com/tech/index.php?article=10
diff removal/installationhttp://forums.celicasupra.com/showthread.php?t=26180
Transfer Case Crossmemberhttp://www.brian894x4.com/BudBuiltcrossmember.html
Change the Rear Differential Fluid on '07 Tundrahttp://www.toyotanation.com/forum/114-2nd-generation-2007/218004-diy-change....undra-w-pics.html
Changing Your Front, Rear, Tranny & Transfer Case Fluidshttp://www.4runners.org/writeups/difftsf/index.html
Type R Rear Differentialhttp://www.4runners.org/writeups/typerdiff/index.html
Differential Breather Relocation Mod for - Tundra Truckzhttp://www.toyotatundraforum.com/transmission-drivetrain/685-differential-b....od-07-tundra.html
Install a Rear Differential Breather Extensionhttp://www.customtacos.com/tech/index.php?article=86
Rear Diff Breatherhttp://www.toyota120.com/html/rear_diff_breather.html
Front and Rear Diff Oil Changehttp://www.parksoffroad.com/tacomamods/maintitems/diffoilchange/diffoilchange.htm
ADD - Maintenance/ troubleshootinghttp://www.toyotasurf.asn.au/techsite/add.htm
Rear Axle Seal - Faqhttp://www.ttora.com/wiki/index.php/Rear_Axle_Seal
Toyota 4Runner Highlander Extended Rear Differential Breatherhttp://www.top4runners.com/ja/diff.html
FJ40 - EZ-Locker / Lock-Right install instructionhttp://www.ih8mud.com/tech/woody/ez-lock.html
3rd Gen 4Runner E-locker Retrofithttp://www.4runners.org/writeups/elocker/
Front Lockerhttp://www.toy4x4.net/front_locker/index.htm
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