Resonators tend to deepen the tone a little as well as know down the db's a little but not a lot. One thing to remember is that with the S/C you are increasing your compression this WILL make the exhaust louder than a non S?Ced car. At high rpms there is not a lot you can do to quiet it down without adding some restriction on flow. I personally have a lot of experiance with this since i build custom mufflers for all sorts of cars and trucks. I use a diversionary baffle style muffler similar to a flowmaster but i have figured out how to "tune" the tone somewhat by the placment and design of the baffles in the muffler. Normally i build a single in dual out or dual in dual out muffler for a dual setup. This tucks the muffler back into the stock location so pipe routing is not an issue. Back to your problem, i dont think resonators will quiet it down enough, i think you will need different mufflers, but that is just my opinion. If you have any ?s about exhaust specifically please feel free to ask, i have been building these mufflers for about 5 yrs now and i have a lot of experiance in this field. I am actually designing a new two chamber muffler for my soon to be S/Ced Axiom, it will be a litle more mellow than my current mufflers. Ask Moncha about my Axiom and what it sounds like since we share the same engine.