[kfoote]

You should be able to get the 1991 Miata under 2000 lbs. Minimum weight for the Spec Miatas is 2200 lbs with driver and 80 lbs of roll cage, and most of the specs run ballast to bring them up to weight. This is also with the factory hardtop, which adds about 15-20 lbs over the convertible top (removed in SM rules).