Sounds like more work than it's worth to me..... I have had a banshee with mild mods for 10 years now, dual carbs are not too bad. Jetting on those carbs on the other hand, is a pain because you have to remove the float bowls. My yfz, has a nice little screw at the bottom to change the jets.... Much easier.
Anyway, I would just stick with the recommended tuning / carb sync procedure. Just my two cents though. On the other hand, if you really wanted to spend the time to fab something else up, might be a fun project.
Nice pics by the way.
:cheers: