TA21's could be used, but why? Are you looking for a quick performance upgrade? If you are, you won't find it by fitting MC21 carbs.

Pull the black/blue wire behind the rear lights and drill a couple of 20mm holes in the airbox, and an R2/4J will make around 62hp if it's fresh. If you want more than that you need to start getting inside the motor.
_________________
Andy.
NSR-WORLD.COM

Please keep all responses to Forum posts on the Forum so that others may benefit.

Please DO NOT PM me for technical advice. My time is precious, and you will probably receive a faster response on the Forum anyway.

Check us out on Facebook! Please "like" our page!