i think someone had cleared their 92-93 and it turned out like that… if u want that clear look on a 90-91 u can get the aftermarket one that is already cleared… but i who just clear the 92-93 on put it on the 90-91…
my guess would be an oven took the lens off the housing and then took the amber out…but thats just a guess, oh and its a bitch i have tried it on a set of 91 tails before…they didnt survive