What Held Ballast Resistor On?

ok so i'm putting my 74 back together (see thread http://www.forabodiesonly.com/mopar/showthread.php?t=55266 ) and came across a slight memory failure. what type screw held the ballast resistor on? I'm not going for correct OEM restoration here but i definelty don't want some cheesie looking bolt holding it on. any help would be great thanks!