I'm Pilot from Brazil, I need help me
I have a Kawasaki STX1200R year 2003, following parts list I have in Kawasaki:
* ADA BILLET HEAD
* TRI PIPE
* IGNITION ADVENT
* SPONSORS R&D
* REEDS VFORCE 2
* RIDE PLATE AND INTAKE GRATE -R&D
* CILINDER DONT PORTING IS OEM
* IMPELLER SOLAS 15/21
* UMI STEERING SYSTEM
* AUTO TRIM SPEED MAGIC
* CARBURETORS IS OEM
This jet is giving 66.9 mph, he has plenty of torque, but would like to reach 70 mph, with many ripped (torque) but has a lot in end few meters away ...
what should I do? buy what carbs? I porting my cilinder? which settings?

know someone who has the carbs for sale? or performance parts?