The limited-slip differential was bundled with the optional suspension/handling package (Bilsteins + LSD, generally on Grand Touring), correcting the common assumption that every 6-speed Sport had an LSD. It can't be confirmed by looking at the car; buyers verify via the dealer or a Mazda-recreated window sticker from the VIN, and an LSD can be retrofitted.
LSD came only with the suspension package and isn't visible
Mazda MX-5 Miata (NC) · originality