91-96 are for the bubble style Caprice. 80-90 is for a Box Caprice. I sold a set of '88 one piece Euro lights for $60 just to give you an idea. For either car, you should be able to find a nice used set for $60-80 though.
CLASSIC INDUSTRIES IN HUNTINGTON CA, HAS THE REPRODUCTION ONES FOR $110.00 A SIDE. I KNOW ITS MORE MONEY BUT THEY ARE BRAND NEW. YOU GET WHAT YOU PAY FOR. HERE ARE THE PART #'s B201664 & B201665. Good Luck.