Need dimensions of stock dash openings for stock radio

[Green Monster]

Does anyone have or would be willing to provide the radio dash opening dimensions for the stock radio on a 72 Chevy Pickup/Blazer/Suburban dash?

I'm looking for 6 dimensions (A through F) shown in the first two attachments.

I'm working on having a bezel machined from aluminum that will allow installation of an original shaft radio into a hacked single din opening. If this looks clean and works well as I expect it will, it will save me from having to fabricate and weld in sheet metal to fix the cut radio opening.

Thanks for your help!