Installation of Rega RB300

I recently bought a used Rega RB300 arm. Can anyone advise me the distance between the turntable spindle axis and the centre of the hole to be drilled (on the arm board)for the installation of the arm. Or is there any website depicting this sort of information.

I'm thinking of mounting them on a used Basis turntable (Basis 1400). Do I have to drill another hole for installation of arm. Regards