I installed the BAK on mine and for looks in my opinion is the best. It covers the ugly part of the vtwin engine perfect but smaller than the stock one so it looks very clean. You will feel some increase in performance over the stocker but make sure you add a fuel management so its done right. So far I've been very happy and no issues at all. The only heads up I will give you is that with any aftermarket intake system you engine noise will be a little louder.
Gitty Up & Go!
2007 VN 900 Custom modifications:
Corbin Young Guns Saddle*OEM Classic Gel Flame Saddle (when 2up)*OEM Light Bar*National Cycles Shield*OEM Ribbed Handlebar Grips*OEM Classic Rear Fender*PC III*V&H SCS Pipes (Modified)*Comet Milled BAK*Engine Guard*Genmar Risers*Clear Alternatives Integrated Tail Light*Kury Magnum Plus Mirrors*Kury Cruise Control*Upgraded Horn*Metzler 90/90/21*Avon Venom 200/70/15*Both SW Pulleys.