I'm new to to this wesite. Just bought a 1990 trooper with a 2.8 v6 and auto tranny, I believe it's a 4L30E. I would like to know if anyone out there knows if you can determine if you have a factory limited slip diff. from your VIN. If so which number would that be? Tried doing a search, the info is probably allready on this site somewhere but I didn't find it. Thanks for any input. <img src="/forums/images/graemlins/cheers.gif" alt="" />