I've always heard that a 2 into 1 or a 2-2 setup with a crossover is a better pipe then 2 individual, the cylinders help each other that way.
2012 Cross Country(Imp blue)
de-badged,(self tinted) Klockwerx flare, passenger backrest, passenger touring floorboards, VictoryHID kit, thrush glasspack mod conversion(#24201),Lloyds air filter(from witchdr.)Lloyds timing wheel(8*), adjustable drop link, cut seat, removed cats, PCV w/at.
1978(2009) Honda cb750 chopper