My best friend has a 2000 P71 crown vic ex-police cruiser, The car has a lot of power, but once he rode in my mustang he decided he wanted more, my question in your opinions what is the best bang for the buck besides gears, he doesn't want to lose fuel economy on the highway, would a programmer give more? I don't know anything about the modular motors that's why I'm asking. I'm open to suggestions.

Thanks guys