I remember reading a post back in the spring when I was waiting for mine. Long story short was that the coupe did not have the tax but the cab did because it was heavier and as a result has a worse fuel economy rating.
In the spring it was obvious that different dealers had different information and that those who paid the tax were ultimately reimbursed. Couldn't hurt to call around to a few more places to get more opinions. I paid $1,000 and $1,200 taxes for the cab for a total of $2,200. I would say it was worth it if the gov't used the $$$ to plant trees but who knows where it eventually ends up.