Would anyone reccomend changing the underdriven pulley to make my 2004 3.8l non supercharged monte carlo ss faster?

 

i got an underdrive pully on my 3.4L DOHC and didnt notice any noticable diff in power. it revs a little faster at high RMP say after 5K it climbs to 6600 quicker... but when you figure it was about $100 for the pulley and belt...+ shipping... it wasnt worth it. my main reason for doing it was i needed a new alt at that time so it wasnt much more work to do them both... but for a 3800 i'd say no its not worth it.