Pop-out window removal help

Thanks for the In-Site fellas. I'll be removing the rivets tomorrow night. Any recommendations on what I should use to replace the factory rivets?
I'm also trying to find the complete pop-out window latch assemblies for this car too. No one seems to have them. They look like they are rivetted (plastic parts) to the glass frame also & are not the same as B Bodies or (maybe) 72 & earlier Dusters/Demons. DMT has the complete weatherstripping kit I need to do all of the glass to body sealing.