Hey I like that! Is it aluminium? I might go that route on the '80. Here's a tip if, before you cut the hole make a cardboard or thin metal template 1st. Two reasons; one, if you put the hole in the wrong spot you won't be able to mount the light. Two (& this only if you do the small filler plate like mine), you can flip it to do the other side and they will match. I couldn't make both sides the same on the '73 due to rust damage, though. The side marker light on mine mounts the same as the tail light (rubber gasket) and I made the hole a little big so it pops in instead of breaking.