The chassis does use all of the same front subframe mounts. This eases the installation so you do not have to fab new mounts, or locate where these would need to go.
The rear requires you to remove the sub rails up to the last 6" or so. (I'm on the road and don't have the exact measurement) Then the rear of the frame will bolt to the end of the sub rail where the spring hanger user to bolt in place. We put 2 additional body mounts in the main section of the car to secure everything in place. The mounts are in the frame, you would just have to drill the corresponding hole in the floor and bolt it in place.
Here are 2 pics of the rear mount during the mock up phase. They were tacked into place at the time of this picture. The 1x1 square tube further forward was also a temporary piece for the mock up phase.