Is there a glass window mount channel available?

[msg]

Dont know what to call this but my windows are mounted to a bracket to raise the windows and that part is fine, but the channel that the glass is mounted to is rusted through pretty bad. I was thinking to grind off the mounted spots of the channel portion and weld a new track for the glass to sit in. Also tried looking for a replacement part with the roller track but all that Ive seen are priced with the glass.