duels on stock 225

Tank is offset on either single or dual exhaust. Cant offer any info on sizing. If I were doing a \6, even if I was using header or dual manifolds I would combine to 1 pipe and use 1 low restriction muffler, then not sure about split (not much room after muffler to do a split before axle). I think full duals on an inline 6 just sounds too weird.