Was curious to know for the 1991 model year if LSD was an option on the Firebirds? I have a 91 Formula and it has LSD, but I'm not sure if it's aftermarket or factory.
Supreme Member
Quote:
Most likely factory - Check your RPO sheet; You should see "G80".Originally Posted by Bowebble
Was curious to know for the 1991 model year if LSD was an option on the Firebirds? I have a 91 Formula and it has LSD, but I'm not sure if it's aftermarket or factory. 
