I am rebuilding the engine in my 1955 TBird and will be replacing the exhaust system at the same time. I am using 1957 TBird iron exhaust manifolds and inlet pipes.   My question is about mufflers.  The stock mufflers are too quiet for my taste.  I want a powerful sound but I don't want to wake up all the dogs in my neighborhood.  Will glass packs be too loud?  The 55 exhaust comes out the bumper, so I would imagine the sound level from the driver's seat may be an issue.  I have used Magnaflow mufflers in the past and I liked them.  Will any muffler fit in these birds or do I have to use a specific type?