1971 grille question

[BB67FB]

I recently purchased a mach 1 grille for my 71 that currently has a standard grille in it. I haven't taken anything apart yet, but just from looking at the new grille it appears that it mounts up differently than the standard grille. Any one have any experience on this?

 

[tx65coupe]

Is the grille you purchased for a 71, or is it for a 72 or 73?

 

[2+2GT]

71-72 used the same grille. The standard and mach1 are interchangeable. The 73 was not at all the same.