90/91 DeVille Windows

I'm looking to replace my front right door window in my 1990 DeVille. Not thinking, I accidentally bought a window for a 1991 on ebay.

I'm a little worried but I was looking at pictures of 91's and they look identical to my '90. So I'm wondering if the window size of the 90 and 91's are the same. If they are that would be very conveniant. If not, I need to figure out what to do with this $50 window I just bought.

Any help?

Call a glass co. , Safelite or Triumph. for interchange info,

it should be the same though those cars are identical besides engine but it never hurts to ask a pro

the GM parts catalog lists two different part numbers for the glass. 1 fits a 1990 only, the other 91-93. Call a junk yard as they have a better interchange book. If I go by the parts book no it will not fit