| These pics are courtesy of YugoBernie.   
 Under the 90-93 wing, there is no third brake light strip like you have on NAs with no wing or on Z32's with the 94+ wing.  So, to install that Kaminari, you would first remove the third brake light strip and then install the wing.  You can see the third brake light strip on Coz's site if you don't understand.  Link to light strip on Coz's site Does that make sense?  
Raj  
 
 
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