AP Products 015-246219 RV Entrance Slam Lock, Black

To be a "new install" is this a complete package? My luggage door does not have any locks shape or form.

Will this work for a new lock install and does it have a template ?

Can I replace the current standard keylock with this unit by modifying the door for it to fit?

Can the locks be actuated from the inside? I would like to use these to make doors for a utv