Pictures of 70 Cuda Rear Valance Vs 71-74

This probably has been asked before but I was unable to locate a clear answer. Can someone please post pictures showing the difference between the 70 Cuda rear Valance and 71-74, I know the mounting brackets are not the same. Also am I correct in that 71-74 were the same or is there a difference in those years? Can any another year be mounted on a 70 using the 70 mounting brackets? As always thanks for any help.

Shorter length cutout on bottom lip edge towards center on each side on 70 verses 71 up.
I'll try and post some pictures

70 on top. No reinforcement.

Bracket comparison.

A couple more pics of a 70...

Date code on an original 1970, not sure if they did this on the later years

That's purdy Rick!

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That's purdy Rick!

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I'll second that...It's so reflective you almost can't see the details !!!