I have a 2006 mercury Grand Marquis and was wondering what type of supercharger to buy that would be compatible with the ford modular V8 and would add much power and performance to the car. I also wanted to know if a 2006 mercury Grand Marquis LS had a "chip" that limited its top speed and If i needed to remove it or replace it with a high performance chip to achive a higher top speed. Also whats a good exhaust system that would add power and make a beastly sound? Any help would be greatly appreciated. Thanx!