I think it was before your time. It came about during the Superbowl. Whistle mufflers were some new rage in Anaheim. This guy got interviewed when he was having one installed on his Supra.

Watchy
http://homepage.mac.com/howheels/rubpics/woowoo.wmv

-'96 SE MTX 3L -'98 SVT 1,173 of 6,535 -'05 Mazda 6s, loaded, g/f's ride -Need a 96-00 manual on CD? PM or email me