Last night I went down to the nearest home improvement center and bought a 1-1/2" bi-metal holesaw. I chucked it into my 1/2" Milwaukee and clamped the drill into a vise.
I removed one of the tapered-end mufflers from my new '07 TBA, engaged the trigger lock on the drill and held the pipe end against the spinning holesaw. It rattled around a bit before it found a path and got busy. After a few minutes, the holesaw broke through.
I used a flat chisel held in a pair of vise grips and carefully puonded the end pipe until the two little tack welds broke free.
After removing the pipe end and peering up the back-end with a flashlight, it is plain to see that I will not be able to remove any of the inner baffles without cutting the tapered end off.
See:
Customizing Stock Pipes I guess that's why you never see customized tapered end pipes for sale. They are all either cannon-style (cut-off tapered end pipes) or slash-cut pipes.
With the end plate and back-end through pipe removed, the pipe is about 5% louder. Not a good investment of time.
I have a set of
Chevy605's rolling toward me as I type this.
06 America - missing, presumed in bits. With it's TBS wheel... 
09 America - It's very blue....
