good exhaust system for a 1970 Camaro

[MosportGreen66]

I just put a down payment on a 1970 Camaro 350ci/250hp with 17,800 original miles. The car has a single exhaust unit in it now and the only thing I would like to change on the car is the exhaust system. What is a nice sounding - good performing exhaust system for a s/b 1970 Camaro?

-Dan
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