Can someone tell me why some 87 IROC Camaros have a split seat fold down and some are all 1 piece??, and the back wheel hatch side covers -some are just plastic and some are covered with the same material as the back floor? Just wondering- seen both in IROC cars

 

theyre just factory options that the original owner or deal may have ordered. it doesnt make the car worth any more or less than the other. the split rear bench was very popular