The MC16 output shaft doesn't have the same end as the later models, so can't drive the MC18/21 speedo.
It may be possible to make an adaptor to screw to the end of the shaft, or rebuild the transmission with a later shaft.
_________________
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!