Landcruiser 80

Hi all.

I have a 1994 DX (base model) 80 series, Landcruiser.
1hz engine, 5 speed. and 4 Questions

1) Number of Pole Pairs on Alternator?

2)Alternator Pully Diameter?

3)Crank Pully Diamter?

4)Is the Alternator Single or Star Point?

I need this info to get my Alternator based Tacho calibrated.

Any help would be appreciated!!

Thanks

Ben