do you still have resonators? if you don't, you can always look for a 3" over axle pipe that comes with resonators (some companies sell them that way or you can have an exhaust shop make you one) the 3" diameter will give a deep growl while the resonators will tame down the noise. if you still have resonators, GT500 is a good choice
yes i still have resonators.
I think im gona put on my factory mufflers and see how they sound, if i like them, i'll just weld 4" or 4.5" tips them.