Is a RS250 1989 magtek 17" rear wheel a straight swop into a MC21 ?

I'm told it was the same wheel used in the NSR F3 kit.

How about the cush drive, must you use the RS or can the NSR drive still be used ?
_________________
Poul
"If Life Gets Boring, Risk It!"
MC21SE, KISS box
MC21SP, HRC box, racing loom