The Rover-Landers of BC

Question for early defender owners , hooking up my master cyl part number NRC 8690 , the front fitting is 12 mm the back fitting is smaller , which line goes to what brakes ? Iam assuming the 12 mm fitting line goes to the front brakes but have read conflicting things about this depending if it's a d 90 or d 110 master cylinder , but looking up online this master cyl is said to fit both models . Also with the larger fitting is it 12 mm with 3/16 line or 12 mm for 1/4 line , thanks Troy

Front = front, rear = rear.

It is best to look at the parts catalog as it shows the piping setup for each of the different styles through the years.