I prefer just bolt ons because they are quick N Easy and there's maybe 2% of the folks out there on Busa's using the power the stock Busa has to offer anyway. So, why go through all the hassle for 12HP that your not going to be using?
Anyhoo, we stock and sell Leo Vince, In fact I have a complete system for the wifes 50cc Zuma Scooter made by them. Good Stuff. They sound real nice, the problem is the supply line. Pretty sure the Italians still transport everything via Mule. Otherwise, very nice pipes.
As for the Pair/ Power commander? Neither will probably be neccessary, but blocking the the pair isn't going to hurt anything.
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