I have it on right now and there seems to be NO VISUAL UPGRADES except rally suspension. The ride height is much higher but you cannot equip it and drive with it. So it seems like you also need to buy the DLC in order to use it. This is my guess. Too bad their stupid UI is blocking you from getting a good view of the car.
I don't know what versions people have because there is no lowder (as in lower?) and you can't even use the parts until you have the DLC.
Now seeing how they can integrate more parts into the system it pisses me off they don't do anything more with it. Sorry I had to vent.
...Too bad their stupid UI is blocking you from getting a good view of the car...