i couldn't find any companies that make headers for the vr6, but w/those bolt ons and/or the supercharger/turbo u should have more than enough power. U might also want to upgrade the suspension in order to deal w/ the new power. btw, a short shift kit, new spark plags, and a nice oil change will always free up some power, and give u better times (to satisfy the budget enthusiat).
have fun w/the new car, and i would love to hear about the upgrades that you make. from experince, the chip does make a small, but noticable change in power.