Suggestions for muscle car sound muffler without drone

Here's the before and after sound clips. Dynomax vt clip (before) and the exhaust after branch resonator clip are located here: https://skydrive.live.com/redir?resid=6E844A0215278E3A!151&authkey=!ACREfm0dcZdto7U . I may not have had the mic the same distance so the level may be a little different but you should be able to hear the overall sound.