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Hi folks Well I did it! After many months of saving up my left-over pennies, I had a stainless steel, free-flow exhaust system put on my car. It realy is a beauty. There is a round silencer with two inlets on he one side and two inlets and an outlet on the other side. The pipes from the two front cylinders enter the silencer at the left and right hand side respectively but the pipes from the rear cylinders are turned so that the gasses from the left rear cylender enter the silencer from the right-hand side and vice versa. The idea is to keep the manifold lenghts equal. The system is properly muffled so it isn't noisy at all but it has a healty grunt to it!!! I do however have one question. Is there a chance that a free-flow system can cause the engine to run too lean? Should I increase the main jet size to counter this? Any ideas? Regards Adriaan Loedolff adriaan@norton.ctech.ac.za '69 Variant Automatic (200 000 miles + and still cruisin' after all of these years!)