First off, no SR20, sorry! I was driving up the large bridge that connects the two sides of the city when I saw what looked like a G8, but the badges were circular, which was very striking compared to the elongated Pontiac triangle. I didn't notice until it was far from view, so I couldn't get a view from the front!
I know Jalopnik ran this article about getting a conversion kit which I'm sure it likely is. I will look for you, and I will find you!