Kindly be cautious to check the distance of two holes before installation.
If you have one door hole to replace new lock set, you should drill the second hole basic on the template, mark the 3-3/20'' (80 mm) distance between two holes.
Then next process for disassemble Interior knob and cylinder turn button.
Install this front door lock set should be inserted exterior front plate and interior plate at the same time then drive-in the screws, check the function will be fine.