i have a pair of glass pieces off of a 1990 rs that i have no use for. i put them up on ebay for what i thought was pretty cheap at $15 a piece.

http://cgi.ebay.com/ebaymotors/ws/eB...m=280113231331

my question is with the door glass are the pieces universal for any 82-92 fbody? i was asked a question stating that for example classic industries lists the door glass under several different part numbers breaking them up in specific year ranges.

here is there listing for a 90-92 glass

http://www.parts123.com/parts123/yb....Z5Z5Z50000136b

here is 82-89 glass. price is different also.
http://www.parts123.com/parts123/yb....Z5Z5Z50000136b

what is the difference in years so i don't sell someone the wrong piece of glass.

thanks!