Well....having owned my 70 Roadrunner for a loooooong time, I will say this. The original tabs are half-plastic/half-metal. I got some reproduction ones with a reproduction grill hardware kit & the reproductions are all plastic.

70 Roadrunner convt. street car 440+6, NOS, 4-spd, SS springs '96 Mustang GT convt. street car '04 4.6 SOHC, NOS, auto, lowered "Officer, that button is for short on-ramps"