I was thinking about safety in my miata recently (I know, I know..), and it seems to me that the sides of the hardtop that extend over the top of the windows are the closest hard surface to my head. Has anyone ever padded this surface to protect against injury in a rollover? I am working on a custom hardtop headliner and I was considering trying to put SFI padding underneath in parts. Any thoughts or suggestions? Has anyone tried this before?