I fitted the Classic bars to my 05 Grey Rocket and it went just as quick.
You will need the longer throttle cables and the top brake pipe needs to be about 30mm longer to be right.
I didn't stay with the Classic bars and made do with routing the throttle cables behind the headlamp brackets so they were close to the headstock.
I went back to originals as the Classics didn't suit me but I'm stil lnot happy with the original ones either.
Perhaps it's because I'm just a Whingeing Pom !!
All the best.
Al