Look carefully at this picture, the tips are not even and the tips are not perfectly round. A muffler shop can fix this, so if you don't mind getting it fixed...

 

I have the XO2 exhaust and i have to say, i love it.
I like it better than HKS because it is deeper and has less rasp.

Expect to have fittament issues though. i had to bend the hangers and install washers to get it to fit correctly

 

humm... I think I will probably get the loose part in my exhaust re weld... Thanks!