IDK just ask Loumc about his rockin zx10 with bars..
Ah..My favorite subject. I've been doing this to my give or take a little bit, Liter race replica's for 30 years.
The core of the question is..how hard core are you?
If You can be totally happy with factory products made for the masses (highest market base) in a general category...then...walk into a dealership and buy what they sell.
If You want a harder edged touring bike. Start with a Race Replica, and make the cosmetic modifications to suit Your individual desires.
Harder edged will have rewarding moments, out there. One that is priceless is Power...At high Altitude (Colorado Rockies) and..You come up behind a string of cars/small trucks/Motor homes, that are backed up behind a big rig, and everyone is gasping for breath, and can't pass because of that, plus the winding road hasn't got passing lanes or distance of visibility.
Enter the Race Replica...Hasn't been neutered for so called "more torque or low/mid range power" Race replica has all the goods, and it is lighter than the "non-Race developed" Translation...You Pass, and keep going at Your Pace. The alternative is fall in behind that snail pace bunch.
I find the Race Replica, loaded for a long haul tour, is stable like a rock. Every part of it that was made for track Racing stability is doing that same job as a touring bike. That stability is so confidence inspiring, you can be just more relaxed.
When You are on the bike all day long, day after day, week after week, Month after month...It makes a difference.