The long awaited, high performance ZR-1 option package ($27,016 for coupes, only) made its appearance in 1989, and included special rear body panels and an all aluminum block designated the LT5, producing 375 hp. Drivers got an airbag and all engines got an oil change monitoring system. All LT-5 engines were built by Mercury Marine in Stillwater, Oklahoma.

1990 Corvette Options

RPO#	DESCRIPTION	QUANTITY	$ RETAIL
1YY07	Base Corvette Sport Coupe	16,016	31,979
1YY67	Base Corvette Convertible	7,630	37,264
AR9	Base Seats - Leather	11,649	425
AQ9	Sport Seats - Leather	11,457	1,050
AC3	Power Driver Seat	23,109	270
AC1	Power Passenger Seat	20,419	270
B2K	Callaway Twin-Turbo	58	26,895
CC2	Auxillary Hardtop (convertible)	2,371	1,995
C2L	Dual Removable Roof Panels (coupe)	6,422	915
24S	Removable Roof Panel, blue tint (coupe)	7,852	615
64S	Removable Roof Panel, bronze tint (coupe)	4,340	615
C68	Air Conditioning, Electronic Control	22,497	180
FX3	Selective Ride and Handling, Electronic	7,576	1,695
G92	Performance Axle Ratio	9,362	22
K05	Engine Block Heater	1,585	20
KC4	Engine Oil Cooler	16,220	110
MN6	6-Speed Manual Transmission	8,100	0
NN5	California Emission Requirements	4,035	100
UJ6	Low Tire Pressure Warning Indicator	8,432	325
UU8	Stereo System, Delco-Bose	6,401	823
U1F	Stereo System with Compact Disc, Delco-Bose	15,716	1,219
V56	Luggage Rack (convertible)	1,284	140
Z51	Performance Handling Package (coupe)	5,446	460
ZR1	Special Performance Package	3,049	27,016

1990 Corvette Exterior Color Choices

CODE	EXTERIOR	QUANTITY
10	White	4,872
25	Steel Blue Metallic	813
41	Black	4,759
42	Turquoise Metallic	589
53	Competition Yellow	278
68	Dark Red Metallic	2,353
80	Quasar Blue Metallic	474
81	Bright Red	6,956
91	Polo Green Metallic	1,674
96	Charcoal Metallic	878

1990 Corvette Interior Color Choices

CODE	COLOR
19C	Black Cloth
193	Black Leather
223	Blue Leather
60C	Saddle Cloth
603	Saddle Leather
733	Red Leather
903	Gray Leather