Thanks for all the help. I called Kia and gave them the vin# and they said the one I'm working on came with a LSD, but it sure acts like a open diff. Tires turn opposite direction when rear jacked up. Must be wore out. Maybe I can take it to my rear end guy,and he can make it stiffer. I'll try calling a miata parts outlet for front. I assume the factory front is open.

Last edited by RyanR; 01/03/14 05:43 PM.