i havent seen one but ill try to explain.
1. Remove the exhaust axle back only
2. drill the rivets 4 each tip... (make sure your drill got power) not the dremmel.)
3. twist and turn and pull
4. put your black chrome tip....
5. rivet each corner... ( i got a rivet gun and the rivet at Home Depot) FYI make sure you get the correct size... proper width and the size. if its too long it wont fit, it will stick out. and the rivets doesnt hold it properly. so bring your tip to home depot to get the right fit (width) rivet. it has to fill the entire hole.
before putting the tip make sure you sand and paint the exhaust to hide the ugly OEM color can. you can also buy the paint at Home Depot. high temp paint.