Hello all, this is my first post so forgive the stupid question. I did a search on 3.7 mods and did not find any posts listed. Has anyone done mods to a 3.7 and gained any speed? I'm curious to find out. I know thw car wasn't meant for racing but I would like a little bit of power when I smash the pedal. Also has any one installed subs in the lift gate? If so was it difficult and how does it sound. Any help would be greatly appreciated.