http://www.youtube.com/watch?v=dB5W9jQxlMo

Chop off your heavy mid muffler and slip on one of these Y pipes.  Works with stock or aftermarket mufflers. Aftermarket mufflers don't make much difference in sound till you eliminate the mid muffler.

Features include:

Mandrel Bent tubing

TIG welded

Threads for O2 sensor

Less weight

More Power

Much better sound

Includes front header clamps