I Did it, it makes a little difference. Worth doing doesn't take long took me like 15 minutes just took a 3/4 inch 12inch long. A lot of people on this forum have done it. Go for it it's no aftermarket exhaust but can't hurt to get a little more out of the stock system.
Used a 1" masonry bit on mine a while ago. Definitely sounds louder/deeper at idle but really no noticeable change aside from that. It's still really quiet next to any aftermarket exhaust.