rocker arms, roller tips?

i was wondering what rocker arms and roller tips. i know i can upgrade to roller tips but what does that do? any increased HP? i have a 2200....talk to me people...lol

Im not sure what kind of hp increase you would get if any, but all it does is add a roller bearing to the ends of the rocker arms. This reduces friction and decreases wear on ur valves and pushrods. To get some noticeable difference you would have to get lighter valves, etc and that would give you some added zing to the revs.