GTA mesh wheels - fronts?

[BuickGN29]

Does anyone know off hand what the sizes are on the stock GTA mesh wheels?

Front and rears?

How about the size for the bolt patterns - have that info?

Are there any GM part numbers, stamps, or markings that would identify these as being GM wheels?

I could prolly search this section of the site, but cruising non work sites @ work is a big no no.

Thanks in advance.

 

[novaderrik]

the GTA fronts are 16X8, with 4" backspacing, i believe.
the bolt pattern is 5x4.75 like pretty much every other GM rwd car built from the 50's to the late 80's.
there are some words cast on the back side of the spokes- i think it says "offset 0" and "Japan" in there somewhere.
not sure about the fronts- but i think they have about 1" more backspacing and are otherwise identical.

 

[BuickGN29]

Outstanding.

Thank you for the info, novaderrik.