The power antenna button would be under where that one is, so I believe that is correct for a power top button. I have a factory power antenna so I can confirm that much.
Just in case anyone is wanting to be correct for a restoration.
http://www.TheFOAT.com/92GTA 1969 Pontiac Firebird w/535ci IAII aluminum block, Dailey dry sump, Holley EFI (full road race build). Primer black w/black interior. 1992 Pontiac Trans Am GTA w/SLP Performance Package. Dark Jade Grey Metallic, grey leather, T-Tops.
