All comes down to the quality of the playfield. I'm sure you're already aware of the wear spots on them.
As is - I would think $1800 to $2200 max (assuming is complete). Cab fade is always present on these, so if its original and without fade perhaps add a few $$.
Shopped out - depends as always by who, just be sure to check it over once its completed. $2400 to $2700.
I would be cautious of ANY machine coming from Japan of recent months - due to the possibility of radioactive contamination. I doubt very much this is checked at the docks.