The difference was very apparent with the snappiness of the motor. I changed nothing except the pipe and I can certainly recommend picking up the 2013. I feel like I could go up one tooth on my clutch bell and might do it at my local track as they've changed the layout to be more wide open.

Ultimately our budgets decide everything, but if you can swing it, get it!!! Under $300 for an Italian engine and matched pipe is still a great value.