my personal opinion adding things is a big waste of time and money i have spent like 5k extra and really only picked up 55hp. i have put on the mopar cai, magnaflow exhuast,diablo tune, then i went to a guy to dyno and create a custom tune and that cost 1200.00 and after it was said and done i hade 380hp at the rear wheel. i also put the engine strut brace on that was like over 400.00 and i also threw a few other accessories on.