Tim,
I have had both without a problem. As Richard says newer cars have lugs to fit the mesh to tabs on the grill. M previous Roadster didn't have this & the mesh was essentially only held by the two bolts at the bottom.
This is the 2014 car manual showing the grill fitment
![[Linked Image]](https://www.tm-img.com/images/2020/12/22/2020-12-22.png)