Whatever you want to call it, I am having trouble tracking one down for my 89. Specifically the passenger side.
If anyone knows where i can grab one that would be great. I am about to just cut one from plexi glass here in the mean time.

If you know of one in a junk yard i would be willing to pay for your time to get it for me, thanks.

 

I just came from a junkyard the other day and they had an 88 & a 91. I can give 'em a call and see if the 88 had that window your looking for if ya want.

 

You might want to give these guys a try.... http://www.yotayard.com/parts.htm
But don't expect any cheap prices.. I emailed them about a new tailgate and passenger side brake lense and they quoted me $30 for the lense.. and 100-200 for the tailgate.. I can get new parts that aren't taken off vehicles for the same or lower.... But you might want to give them a try if you can't find it anywhere else