How can I get better acceleration with my Mercury Sable?

I have a 2001 Mercury Sable with a V6 Vulcan engine. I want to get better acceleration and maybe some more horse power without spending a lot of money. I know its a Sable and theres probably not much you can do to it, but you've got to work with what you've got. What performance upgrades can i do that will get me the most acceleration?