yeah that works too... I've never used one but I have a few friends who rage about them.

Alternatively you could also just throw on a restriction plate... unbolt a flange (ideally one right after the cat) and throw the plate between the two exhaust pieces and bolt it back up IIRC they make plates that also double as gaskets for just this purpose.

it will reduce the sound but it shouldn't effect the tone of the exhaust at all.