lol. I'm surprised it could blow out the muffler unless it's not a chambered design.
For this race we took out the cats and installed the Ford Racing Sports Axle backs, the interior tube just has a curve with no chamber, just packing around the tube. This setup got me too 90db a 6000rpm so I just pass for next season at sound controlled tracks.
When looking for the missing projectile, we went through the whole exhaust with no sign of it..... So we made up colourful tales!