ok..i recently sold my apexi catback and now have a stock catback with a GST rear section. i hate the way it sounds...its raspy and farts like a honda...now my question is- will a longer resonator kill some of this sound??

yes

alright...now anyone know where to get one??

Your local muffler shop should have plenty. If not you can use a glasspack. Get those there too, or your autoparts store.

i got a spiral flow designed one made by morosso and it lowered db's quite a bit after me getting used to it for a few days. not pussy cat quiet, but definately milder.