the Miata LSD works in the front. it is confirmed. for over 2 years now.

you can get more flex in the front if you drop the top strut mount 1" and cut 2/3 of the bumpstop out.

the Eaton LSD is the only thing available in the US for the rear.

most US models came with 4.78 gears and there is nothing lower available here.

the 5.38 gears and greek and korean lockers have to be purchased from those companies and may require some sort of translation. so far, i have not seen suitable translation nor have been able to suitably communicate with either of them....

95 Sportage w/welded and 5.89 geared dana 44's on 38.5" TSL's.- SADLY SOLD
CURRENTLY - 2000 sportage, 5.38 gears, welded diffs, 35" tires, 5.5" lift

http://www.cardomain.com/ride/341410