hey guy, just recently done this type of upgrade to mine.
You put the star in and there is a u shape metal lock, it turns either way, that is what keep it in there. I done the upgrade tailights also, and the door handles as well, It almost looks like a 95 except for the body side molding.
I just haven't been albe to find some reasonable prices for this stuff, and dealer is just toooo much, about 200.00 a piece and that is 4 pieces on each side. I am also looking into doing the seats, that's what make mine look really old on the inside, not torn or anything just the old design.
Anyway would like to see a picture of what you done, if you could email me one, I would gladly seen you what i done to mine, good luck....