Backset is 35mm or 45 mm (The distance from the centre of the spindle hole to the front of the lock)
PZ is 92 mm (Distance from the centre of the spindle hole to the centre of the round part of the cylinder space)
Latch & deadbolt (Latch is easily turned round to the correct position before being attached to your original strip)
Screws are removed, old centre is unhooked and replaced with new centre.