Since your replacing the entire caliper mount, the easiest way is to remove the (2) mounting bolts, then remove all the lines that are attatched. You will loose some fluid, so be sure to keep a few rags handy.
After cleaning the banjo fittings (oil bolts) install NEW crush washers, two each on each line and re-attached the lines to the unit. Don't overtighten the bolts and damage the crush washers. After all the lines are in place and routed correctly (take a picture before you remove the old ones) Re-attached the caliper unit in the correct sequence and make sure you put locktight on the threads of the top bolt, and the female threads of the calliper housing (bottom bolt) then torque to the correct specs. (23 ft. lbs).
Then you simply have to re-bleed the system to get the air out. Don't forget to tilt the left front caliper when you bleed the system.
Good luck, and let us know how it turned out.