One problem would be the ignition switch, which is mounted in the crash pad on 2V models.
On 4V`s it`s mounted in the triple thee, the center part of the crash pad is also lower.
First you must find a way to mount the ig.sw., then I don`t think it is enough clearance between
the crash pad and the triple thee.
4V`s also got a wider handlebar, some "adjustements" would be needed to the crash pad width.
Inge K.