I recently Purchase a RT rear Taillite Len. The numbers match on the bottom of my Len SAE STDB 67R CC. BUT it is Missing a Groove to properly sit in the Metal bezel......... From the wear on the len, it looks like someone tried to use it on a 67gtx, but it does not fit properly.. Any Ideas? I think its for a 1967 Plymouth Belvedere Tail Light..... Mine has seen better days.....I guess I'm still looking....