I was assisting 2 new owners with drilling out thier pipes. The Speedmaster went fine, just wore out the blade. While doing doing the America, we got a little off-center and sawed right thru the side of the beautiful chrome muffler. Luckily I had purchased a used set of pipes several months ago and we salvaged a bad situation. This was the first time I used a big,powerful 1/2" drill. It cut too quickly, wore out the blade and and was difficult to control. I had my best success with a 1/4" drill that forced me to proceed very slowly. Please take your time.
Mike Sr.
