Early a exahust suggestions?

Ok i am taking to cuda to the exhaust shop finally. It has a 360 with stock 273 manifolds. Its a stock 360 nothing special. I am planning on keeping the manifolds for a while until i can afford custom headers since my car is a power steering car. With those things in mind what is my best exhaust option? I am open to keeping single exhaust since my cross member is not modified for duals.
Thanks for suggestions.