glass pack and and muscle car sound

Thrush Turbos here. Been on the car for over 12 years and still look good on the outside and sound sweet. I did however, find that going from turn downs in front of the rear axle to full pipes all the way to the back, changed the sound drastically. The turn downs were probably louder, but definitely more obnoxious inside the car. Once we ran the pipes out the back, it was much more bearable inside the car and honestly, I think it made it sound like a bigger, meaner engine than it was even if the over all dB level was a bit lower.