year of my cad

[Rusty Rider]

Ok here goes. I have a 72 long bed. I belive the cab is not a 72. it has a place to mount the rear mirror on the metal head liner right after the wind shiled, and the throtle pad( yes pad ) dosen't mount to the throtle assembaly, it mount to the floor useing two snap in buttons like the earlier modles. So I look at the vin plate on the drivers door jam to check the rivits ( i would post pics but i am having driver problems atm) and they are more like regular pop rivits( you can see the shank that breaks off leaving the part that expands the walls to hold the rivit in place. I do know that chevy changed the rivits ( ones that do not leave the shank ) but what year. Did our trucks have the rivest like you can buy out of the hard ware store or is that another think I could add to my theory list.


PS. Is there any stamped vin # on the cab besideds the vin plate I described above?