Yes I would reccomend doing the original way if you want absolutely no cabin noise however the second way gives you a louder sound as it is essentially straight pipes with only the hemoltz resonator providing some sound damping. So as usual its a trade off. If you want a certain loudness you will invetibly get some drone but it sounds like if you want no drone the original mod may be your safeest bet! When I say drone its not the deep bassy drone of most systems! I love it since I dont cruise at 80 very often!
It sounds like a race car to me now-really diggin the sound. Its totally stock and quiet when city driving-its truly only right at 80mph in 7th-must be an rpm range that you otherwise really never hit!