Actualy that muffler is really quiet compared to othes of the same style. It has a lot of packing so it's not as light as it looks but is quieter becase of that.
I saw it on my friends Turbo TC two weeks ago and loved the look/sound so i went to a buddy of mine at a shop down here in Miami and got it at cost...$230 3" Turbo edition. Cant wait to put it on but my motor is currently being built...the stress is killing me! So pictures please when you can.
i was just at targa (road rally) and there is a supra twin turbo (sponsored by HKS) in it racing... the muffler was HUGE (not the exact same one but simmilar) ... and to my suprise it was really quiet... but at the same time had a nice rumble really nice