Mufflers like Dynomax

You could add a pair of bullet glasspacks as resonators.
For a more elegant solution, Google helmholtz resonators for exhaust.

yea i've seen those before.. i don't want to cut up the exhause and thry to fit them things under there.. my tti exhaust tucke up undert he car great now. i'll fins a muffler for it thats quieter and doesn't drone sooner or later.