exhaust

i had another question for yall. i got a 93 crown vic police interceptor. its got the dual exhaust and had the stock mufflers. i hade them taken off and glass packs welded on(after checking with dealership to make sure i'd be okay for the engine)
it sounds nice but id like to be alittle deeper growl. plus now when i rev it up its got the infamous glass pack popin as it revs down. (cheapy packs) so if any one knows a good muffler or a good brand of pack please let me know. id rather not do anything to drastic with the pipes themselves there in good shape no holes or anything. i also took of the silencers. so any help on how to make the 4.6 crown sound like a stang would be awesome.