my next question is do the correct ones bend as driving down the road?
Are these for the '68 model year only, or were they used on the next model year until supply was exhaused?
I spoke to Troy (I don't have one on my car), and he said it probably moves a little but not enough that would be seen with the naked eye. He also said no, that spoiler was only used in 68 because the lower valance is a different design along the bottom lip/flange in 69. The 68 spoiler would not fit in this area due to the design change where the license plate bracket had two tabs that attach to the bottom lip of the valance instead of bolting to the front face like in 67-68.