it usually sounds not so good with the cats removed. what sort of exhaust do you have right now? the piulley wont help much with sound, but you will get some power out of it
Yea 97sally6 is right, it wont sound good with out the cat, What i would do is get one of the Flowmaster exhaust systems (flowmaster has sound clips on their website, so listen to them and pick which one you like best) and that will DEF. Give you sound or if you dont want a whole exhaust just get one of the flowmaster mufflers, thoes will make your car sound a little meaner
Keep the cats or install high flow cats, delete the y pipe and run each pipe to a flowmaster super 40 with dumps. It will sound pretty mean. Good Luck!
and if your dead set on removing some cats, depending on where you live you can delete the second set and weld in a straight pipe and it will sound deeper that way