Very nice , Fabrication all looks great , swingarm pivot must be pretty close to busa geometry
One thing i found on my bike is that air filter will not stop all the salt, and some of those inverted type have been known to choke the flow of air due to the inverted cap being too close to the turbo inlet ,
needs checking .
For cleaner air on the 750 i ducted the air from the front of the fairing to the turbo , i don't run a filter at all and have much less salt getting into the motor than i did with the filter down low and i get a couple of psi free at 200mph
What engine management are you running ?