Post by
evildky »
https://forums.nicoclub.com/evildky-u13100.html
Tue Jan 20, 2015 5:33 am
It's even easier on the Z31, stick your head under the back end and look at the diff cover, if it;'s smooth it's an open diff if it has large fins covering it it'a LSD. I believe a manufacture date of 4/87 or after should have the LSD but only on the "C" code cars. Often people will do a turbo swap on a non turbo car, that 4th digit int he vin tells you it is a factory turbo, "JN1CZ" anything else didnt come with a turbo.