First you need to take out the rivets in the rear of the muffler. To do this you will need to knock out the rivet center pins first. Just take a small punch and drive the pins through the rivets. After doing this, drill out the rivets using a #21 drill bit. After you have all the rivets out, take a pair of Vice Grips and clamp them on the part of the tail pipe that extends out from the end plate. Then take a small hammer and hit the Vice Grips to remove the end plate/baffle assembly.... This takes a little effort! After you have the four end plates removed, cut the baffles off with a hacksaw so they are even with the inside of the end plate.

Next you need to clean out the old rivet pieces out of your mufflers. Now re-rivet the end plates back on the mufflers. Then start it up and listen to the music!!! I did this and mine runs exactly the same as before it just has a much throatier sound! It sure beats spending $400 on pipes that aren't chromed as good as the stock ones and don't sound as good!