hey, as long as we're on the topic, whats a glasspack? ive heard of people putting those in place of a resonator. what do they do, and why do they take out the rasp noise? also, what mufflers do you recommend? im thinking about taking out my resonator and putting a highflow muffler on.. how many hp can i expect to gain? and whats the best way to do it without sounding like a ricemobile? how much can i expect to pay? i have a 96 se.