I am building a '54 Dodge 1/2 ton pickup with an almost stock 230 c.i. inline 6 engine. I have a split manifold set up to the 120 hp 6 and, therefore I need two exhaust pipes. The problem: The easy way would be to run the two pipes all the way back (with a crossover) and have them exit together on the right rear. This look mimics the European model for exhaust and I do not like that look. I realize there is a great amount of science and expertise that goes into a really good exhaust system. My situation is a small displacement inline 6 that is not going to generate massive horsepower to begin with. If one were to have one of the pipes crossover (somehow) and one come out the left rear and the other come out the right rear would it greatly alter the performance or sound? On the surface it would entail having one pipe considerable longer than the other but would it matter with my low HP setup?