dumb question on rear license plate holder

[scf100]

my 72 Barracuda did not have one.....got a used one.

does tag holder go upwards or downwards to open gas cap?

and do bolts screw into tail panel or do you use nuts to bolt on?

[anlauto]

It's hinges upward, secured by two bolts into the tail panel. The tail panel should have two weld nuts.

[scf100]

Thanks
Looks like I got the wrong one