Replying to To anyone with knowledge of exhaust systems...

Here's the deal, two years ago my dad bought a '99 mustang GT as a fun car to whip around in. Last summer we put in a cold air intake and saw awesome increases in power, acceleration, and exhaust tone. I'm not by any means a motor head, but i really enjoyed doing the project and feeling the results.

My birthday is approaching and I'm looking for another little, easy project for my dad and I. I've considered a couple different items; 78mm BBK Throttle intake (plenum/manifold hybrid), SLP Loudmouth Resonators, and SLP Loudmouth II Mufflers. All three are relatively cheap and easy to install.

My question is about the Loudmouth II Mufflers. Is it worth swapping the stock mufflers for these, without purchasing an aftermarket x-pipe, headers, and cats. I want the sound, but I want gains in HP and torque as well. It's not reasonable or cost-efficient to purchase and entire exhaust.

So is it worth doing?