I second this! My car is a non-Special and sometimes it feels like a slug trying to get up to speed. I know it's a heavy car with a V6 engine, but I often wish I had some more power when accelerating on the highway while merging into traffic. Off the line it's great, but begins to plateau after that.
Off the top of my head, I would suggest maybe installing a cold air intake set-up but I have very limited knowledge about how to go about doing so. There are a great group of guys and gals here that can offer some advice, however!