yes, you take your bumper "covers" off to fit on a kit.
the 88-89 has an amber lense....the 90-91 has clear lense with an (amber cover over the light behind the lense). if you have a 90-91 and want them clear...just unscrew the lense and take out the amber cover. plan to have amber bulbs. cops tend to pull ya over if they are white.
also, the 88-89 have screw holes in the turn signal....the 90-91 does not. just another difference i thought i'd point out
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