They're nice cars, I bought mine used so it's missing a couple minor things, side air bags is one of them, but for the price (nearly half of what it was new) I certainly couldn't complain. I've added the window tint which I think looks really sharp, as does the GXP spoiler. I just had to do a couple things to make my GP mine

I'd like to get a set of Grand Prix GXP or Bonneville SSEI rims for it, but am in no rush as the polished 16" wheels look really good anyway.
The colour is probably the thing that sealed the deal for me, the dealer had a slate metallic coloured one on their website when I was looking, when I got to the dealership I noticed this red one from the road, lol. Really noticeable colour