I have a 1955 Buick Special model 46R. I want to install dual exhaust which means installing an exhaust pipe and muffler on the left side of the car. I have an exhaust manifold from the left side of a 1956 Buick Century in which I could use on the left side and then install the exhaust pipe and muffler that fits on the left side. What I want to know is: can this be done, has it been done before, and what if any difficulties I would encounter?