Mini 6 on a XC500

Help a newbie here....will a Motoplat Mini 6 flywheel/stator combination fit (and work correctly) on my '83 XC500 2 stroke monster? Mine currently has an internal rotor Motoplat and I'm thinking of going to an external rotor setup...which I believe was stock?

The mini 6 external rotor is a GREAT swap for that bike, but you have to get one with the correct taper on the flywheel so that it matches your crank.

Thanks for the info...I figured that may be the case. Now, if only I knew how to determine what the proper taper is? When buying something sight-unseen, who knows if the taper will be right or not? A few hundred bucks here, a few hundred there...and a bunch of unusable parts on the shelf. As a reference point, are there any particular bikes that these mini 6's normally come with, that may have the correct shaft taper I'm going to need?
Again, I thought my '83 was supposed to have the external, but turns out not to be true (or someone swapped it out years ago).
I appreciate whatever info can be shared, to save me from trial and error (it's the error part that tends to drag a person down). Thanks.

part # ?

Is there a part # on the flywheel that can be seen without removing it? If so I would pop the cover on my 84 xc500 and get the number off it. I am going to pick it up this weekend.
Geary