72CSTC5 being a body man you most likely have access to a welder, take the blind rivet installation tool and cut it till its only about 3/8" long, grab a inexpensive C-Clamp and weld the rivet installation tool to it so when you screw it shut it crushes the rivet. Best method I know of and eliminates need for 2 people.
We stock them and you'll find them on this page of our site for $9.95 a set, which includes rivet installation tool, hinge pivot rivets, vent window rubber installation rivets and SS vent window to door pillar screws ( sorry no C-Clamp included ) .
http://www.gmcpauls.com/door_parts11.htm
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