Update: i got the parts in the mail. My stepson helped me to install. So removing the seat is easy 4 nuts, 2 bolts, and disconnect 1 connection.. but really you should remove the rear storage cover. * it has to come out anyway. Just gently pry straight up under the "hinge" this gets the spring loaded flaps out of the way and makes removing seat much easier. Then remove the seat...So then comes installing the cargo box. On each side there is a tab with a preinstalled clip * mine was wrapped up with sticky foam* remove that and set into place. It goes where the "hinge" was and fits over the small hump in the floor. Look where those tabs are and then you can feel the holes under the carpet. You will have to cut the carpet to get the clips through... just about 1/2" square hole on each side. Then just set the cargo box back down and push the clips in. The covers just clip in after that. Reinstall the rear cargo cover.. now mine did not fit all the way back down but very close. I will check this again later but i honestly don't see a way to get it all the way back down.... but i will look. All in all is was an easy project after i found the clips under the sticky foam. I will post some photos sometime. But i can email them if someone request. So now my 2019 R/T is a "special service".
With 3x as much under floor storage space and no 3rd row seat. All i'm missing now is the extra HP that the "S" R/T has. But for $20k less i will be okay