2 stroke pipes in the old days could be taken apart, sometimes the entire center core could be pulled out. Look for rivets, you can drill them out and hopefully remove the baffles. Its a matter of flow, you can drill the baffles larger or drill more holes to improve flow. You will have to rejet, the second the flow goes up the bike will lean out and that will kill power and if it leans out too much you could start melting things. If you can afford it, get an expansion chamber with a jet kit and air cleaner, that will make a whole bunch of power. Happy hot rodding.