I have auto rust techs full rear frame rails trunk floor with extensions front & rear torque boxes and their sub frame connectors all installed by them as they are not too far away. Cant really speak about ride performance because the car used to be a slant 6 and still not completely finished with a 360. But these are mopar guys and that is their main product the owner gave us a tour of the shop where they make all this stuff and it is quite impressive. Highly recommend their products. Keep in mind my car is about 200 pounds heavier with a bunch of dynamat and they did two coats of 3m undercoating which affects leaf springs as I have just posted a question about ride height.
