On a typical street motor, 300 hp with a single exhaust, much like a LS1 Camaro ( I use this car JUST as an example so the reader can get an idea of the original exhaust layout ).

When going from a 2 1/2" single exhaust to a 2 1/2" true dual exhaust, just how important is mandrel bent pipe over regular muffler shop pipe bends??

Personally I feel that on such a low HP motor it's not that big of a difference to justify the added cost.