Gutt'n the Goat Belly

[rlfaubion]

I just bought a new set of stock duals with the catalytic converter for my '06 Nad. I will store it for the day when California clamps down on modified exhaust. You can count on that happening sometime.

Now I'd like to drill out the Goat Belly. Has anyone done this as opposed to Gadgets gutt'n procedure requiring cutting it in half?

If so, what size drill bit?
did you remove the belly to drill?
What did it do to performance?
What did it do to the sound?
Any pitfalls to be aware of?

Just a note - I've already punched through two baffles and removed the silencers.

Thanks for the help.......