awsome!!
Short summary-for more info check Aussielocker in the vendor forums..I just had to post this up...they worked with me on a problem I had and have been great guys..wonderfull customer servce..for all the nitty gritty details check out http://www.rrorc.com/forums/showthread.php?t=27759

FITMENT
88-97 Rangers/Mazda B-series with the 6cyl motors..
*NOTE*..some/most 4cyl models may have the hybrid Dana28/35 carrier setup..you will need to swap the housing/axles/carrier/matching gears for a ttb35 to use their locker..(its a stronger setup anyway.)
hybrid axle link-http://www.therangerstation.com/tech_library/4wd_Front_Axles.html

91-94 Explorers/Navaho's

ANY Ford TTB35!!!