New side panel louvers, with wrap around parking/fog lamps, wider body side mouldings, and the re-styled rear end which was formerly exclusive to the ZR1 were added to all 1991 Corvettes.  The driver was allowed to adjust the Corvette's suspension from firm to very firm, through the new heavy duty suspension (RPO Z07) that was made available on Coupes.  1991 is the last year of the Callaway Twin-Turbo Corvettes.

     Engines:
Coupe: 350 V8 250 bhp @ 4400 rpm, 350 lb-ft @ 3200 rpm.
Convertible: 350 V8 245 bhp @ 4000 rpm, 345 lb-ft @ 3200 rpm.
ZR-1: 350 V8 375 bhp @ 6000 rpm, 370 lb-ft @ 4800 rpm.