replaceing the tips will not do anything the exhaust has an end cap on it. if you try and brek up the baffle all you will end up with is a nice rattle in the exhaus. it will sound better but a good rattle. beside the tip of the exhaust is so small you will have to use a long half inch drive extension to do it. if you remove the whole baffle your back pressuser will also drop because your going from a inch an a half front pipe to a three inch pipe. the performace will drop. i never did the drill method i just removed the end cap from the exhaust . and replaced the chrome tip. it sounds great and performace stayed . besides it doesn't cost anything to do. it's real easy.