hell yeah, use EVERYTHING you have to your advantage when dealing. These guys aren't just going to sit there and take whatever you say. They do this for a living and they are masters at BSing people. I actually love dealing with salespeople because I love the challenge of getting the better end of the deal.
Anyways, to get back to your post, I would tell them that I prefer my 370z all stock, but I would be willing to buy it with the aftermarket exhaust if the price was right
