Flush Glass on 1970 Chevelle or "A-bodies for that matter"

[Toreback]

I really like the flush glass look on classic cars. I have done some internet research and it doesn't appear that there is a company providing a flush mount glass kit for the 70's era A-bodies. the only kits appear to be for the 67-69 Camaros. Does anyone know of a company that is providing a flush mount kit for the 1970 Chevelle? I am getting ready for paint and if I have to do any modifications to the window openings I want to do it prior to that. Has anyone done this type of application before?

Any advice on how to proceed would be helpful guys. Thank you.