installatiion is like a timing belt replacement.. u gain becasue u can fine tune them, if u don't have them it won't kill u, u probally will gain some horse by having them the cam gears that is. Like i said earlier a guy who races professionaly his civic, won't run anything in there but skunk2 cause he says they are just awsome compared to toda, juin, crowe cams he has tried it all but its up to u, i wouldn't go cheap on an internal part, cause it may cause mroe headache later, and plus i bet the OBX will not alst nearly as long as a SKunk2 or one of the nice brands out