Side Window Question

[Lobo'74]

Looking at what needs to be done to my '67. All the saide window rubber, felt, etc needs replacement. It opening up the door and looking inside I found surface rust on the regulator mechanism and rust on the channel the window sits in. I saw two regulators on e-bay, but the channel the window sits in was not in the picture. Is that part of the regulator assembly or is it attached to the glass? I think mine needs replacement (it is starting to exfoliate and flake off) but don't know what part to look for.

Anyone done this?

Thanks.