You need to be carefull on what LSD you get from a Mazda/S2000, some are designed to engage at very high RPMs, not good for a 4WD. I almost bought one cheep on ebay and after reading about it I'm glad I didn't. My boys friend had a Miata with the rear LS and you could feel it engage if you gave it a little juice going around a corner, thats the one I want in my front dif but they seem to be spendy, I think it was the Torsen LSD. I have the extra dif for when I find one though.

Dennis

95 Sportage, gone but not forgotten.
98 Jeep TJ, 4" Zone springs with RC Long arms, Ford 8.8", 4.56 gears & Detroit locker rear, D30, 4.56 & Detroit Trutrack front.