Best sounding muffler for a 88 Firebird?

[Scotty]

Ok well I just rebuilt my whole 350 engine on my 88 Firebird.....Its not a 350 anymore because i had to get the cylinders bigger so its a 355....I have a muffler i've never even heard of on there so i want to get a new one....i want the old muscle car sound the deep loudness that you can hear from a little distance away....i was wondering what would sound the best?

Keep in mind i have to pass admissions so I can't just run straight pipes

THNX ALOT
Scott