crenwelge
cuz 67 was a 1 of a kind fender,Rear and Front.
DOT mandates told the Big 3 that starting in 68 all cars and trucks had to be furnished with side marker lites front and rear!
Thats how ya can tell the diff between a 67 and a 68 at a quick glance.
I guess its easier to make the 68-72 fenders with the marker lite hole,for a broader application range than a 1 yr. only app.
Take a 68 and use a piece of the old and WELD up the hole!
Regards Steve Sr