I know its come up in the past, "Is there a difference between the door glass of a coupe vrs the door glass of a hatchback II?"
The answer is "Yes" (the factory-tinted glass is from a hatchback. The clear glass is from a coupe)
If you are unsure of what you are looking at, look from the front (curved) end of the glass. The hatchback windows follow a roughly even curve for their entire top edge, while the coupe glass flattens out towards the rear edge. It can also be measured from the bottom edge of the glass at the back corner to the rear top corner: 20" for a hatchback and aprox. 20 5/8" for a coupe.
The answer is "Yes" (the factory-tinted glass is from a hatchback. The clear glass is from a coupe)
If you are unsure of what you are looking at, look from the front (curved) end of the glass. The hatchback windows follow a roughly even curve for their entire top edge, while the coupe glass flattens out towards the rear edge. It can also be measured from the bottom edge of the glass at the back corner to the rear top corner: 20" for a hatchback and aprox. 20 5/8" for a coupe.
. Coyote, is there any numbers on the two pieces for future reference. I know I went through this on my sons Honda CRX. Took three tries to get the right glass. I can pick them up if someone is in need of glass.
One door is original, but the other was from a Ghia! Yikes!
I bet that is why the passenger window is a bitch to adjust and maybe that is why it leaks and is generally a pain in my &^% I just had the windows out too (to repaint the trim) 
