MANUFACTURER PART NUMBER: RC28050047. SKYLARK GRAN SPORT 6 CYL 3.3L 1990-1991 WITHOUT ELECTRONIC SUSPENSION, USE PN[AK42] TO REPLACE OEM LOWER MOUNTING HARDWARE IF NECESSARY. SKYLARK GRAN SPORT 4 CYL 2.5L 1990-1991 WITHOUT ELECTRONIC SUSPENSION, USE PN[AK42] TO REPLACE OEM LOWER MOUNTING HARDWARE IF NECESSARY.