They're both excellent choices if you're looking for a Precision.
The MIJ Fenders are in many peoples opinion (mine included) the best available quality-wise, and the Tokai will most likely also be as good.
As far as choice goes I guess it will come down to aesthetics, but those early 80s Tokai models are becoming more sought after so might possibly be a better investment.
Replacement scratchplates shouldn't be a problem, but you could always get Bassdoc on here to make you a tort one using your original as a template - it would be better quality than a shop bought one.