Rear seat belt measurements

I've used the search option but don't seem to find what I'm after

Does anyone know or could get me the measurements for the rear seat belt mount below the window?

Cheers Stu

 

ive got right hand drive 73 from back edge of ctr mullion between two windows back towards rear is 720 and 25 down to centre line of bolt hole for seat belt mount the of inertia other side is under seat on a lap , but not sure if this is standard or not ??

 

Cheers Barney
Those measurements look about right when marked up

 

are you drilling then ? id double check with seat back and type of seatbelt your fitting or if anyone else has different first .