Hi!
I switched to the fz1-bar this weekend. It gives the bike a more agressive stance, and you a more agressive riding postion. The conversion is quite simple.
The hardest part is loosening the left grip. It's glued, hence you will need some kind of force to get it off the handlebar. I used a very thin knife (not sharp!) and a dash of soap, Patience is a key word here:thumbup:
On the right hand side, you'll need to untighten the bolt that holds the brake line to the reservoir tank. Otherwise it will be misaligned with the new handlebar, and thus it will hit either the tank or the fairing with a full steering lock. Furthermore, you'll obviously have to dismantle the right ignition/starter box in order to get the right grip off. It's connected to the ignition box by the throttle wire (there are two wires, by the way), which you also have to remove. That's something of a plunder if you got big hands and fingers...
Speaking of the right ignition box: It's fastened to the bar with a device with a little tap on it. This tap goes into a little hole that you will have to drill. It's crucial that you get that hole straight, otherwise the whole thing will be misaligned, and you won't be able to steer properly as everything will hit either the tank or the fairing on the faired models.
The whole operation took me roughly two hours total. It's a fun and quite easy mod to do. Just be thorough when you do the measuring:thumbup:
Here's a few pics of my baby with the new bars (and mirrors!):