Took some pics, i do really own a mustang...

Coupe rear quarter glass were first offered in 2019 but there were quality issues. Last I heard (2022) they had fixed the issues like the studs not being 100% in the injection mold i.e. poor quality compared to NOS. These are Daniel Carpenter Reproductions that are Ford licensed. Difference is that the DCR's require the use of silicone and the studs are only used to locate the windows. Not ideal but if you do not have a set or cannot find a set this is what you have.

I had a set reconditioned by FoxResto but they sold the refurbishment part of the business to Quarter Horse Motorsports in 2023 (search FB and you will find them). I got mine done before they went up to $800 to do a set and after watching a few YouTube reviews of the DCR windows I am glad I paid to have them refurbished. They are in storage and will go on the car when I get it repainted some years down the road.

Don't get me wrong the DCR units look amazing but I don't know about the whole silicone thing. I would say this is a money thing and since DCR is under the Holley umbrella that does not surprise me as they outsource to the lowest bidder anymore.

This guy on YouTube has a very thorough review of them and there are some good comments below the video:

View: https://www.youtube.com/watch?v=jWRI0kQMTL8

The Coupe windows silicone in. Not sure about the hatch units.

I would contact Quarter Horse Mustangs via Facebook and see if they are restoring the hatch units.

2000xp8 said:

I think you always could get them for a notch (well you have been for a while), they are more expensive, probably because they are licensed (or at least i'm assuming it's licensed).
I would pay the $700 to get hatch quarters with the mustang logo in them.

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It's more like $1k for like new driver's hatch quarter window. You will not find a new passenger window. In the 6 months or so that I looked, a fella had an NOS I believe he wanted $2k for. Ended finding a 8.5-9 of 10 for a few hundred, but I was first & I was lucky.

Black Jack is getting restored/touched up trim from Greg Kaminski. I don'tremember what I paid, but it was a lot of work for maybe $350 or so? Think his FB name is Greg Kski.

I have a pretty decent spare driver's side window, now, from all the hunting I was doing. The ones on Black Jack are pretty tore up from glued trim covers, but if anyone thinks they could do anything with em, they'd be free.