I just deleted the suitcase muffler out of my mkIII.... I love the sound....
my mkII VRT did not have a cat, resonator, or mid muffler, and it was still reasonably quiet, and didnt have the same VR sound, so I know what you mean.
Carlos has a good point... charge it! You can still run the cams, and retain the VR sound... plus on a mkIII, you can fit the V1/V2 series vortech charger in the bay. And if you get tired of it (more likely, you'll get tired of paying for the gas), you can easily pull the charger back off, and put the N'A chip in, and be good to go.
My brother still has that V1 sitting in his garage, and he told me this morning that he didnt think he was going to install it anytime soon
