G5 or G6. The Solstice one is supposed to be the same size too. There are 4" and 5" ones. The 5 inch one looked to be to large me. I purchased a 4 " one, and compared to to a 5 inch one at a WalMart parking lot. Some have a slight curve to them. So stay to the ones mentioned that were mounted on the rear of the trunks, and not the front.
Go to a shopping mall and drive around and look at the ones on Pontiacs. Some were gaudy looking. I saw some on the front of a few Bonnevilles that were a cheap maroon/pinkish color. The one I used had a nice chrome outside with a deep maroon arrowhead inside.
This looks like it belongs there in the first place.
[This message has been edited by josef644 (edited 10-08-2013).]