Upgrades issue with 1955 Mercedes-Benz 300SLR

Just started upgrading the 1955 Mercedes-Benz 300SLR, and noticed something when going in to tune it. The front splitter and rear wing/spoiler don’t change the PI at all. And the race versions of both upgrades are showing as non-adjustable. Not sure if this was intentional, or just an oversight.

Figured I’d bring it to the attention of Turn 10 if the race upgrades are supposed to be adjustable.

I’m on xboxone and knew I had one of these in my garage - I’d just check that the forza front and rear spoilers are installed - mine are showing as adjustable.

Although one thing I noticed was after buying the spoilers, going to tune and moving the sliders to check they moved, when I came out and said no I don’t want to save set up it removed the spoiler. So may be something along those lines if you’d just installed the spoilers then went to tune but backed out without saving may have actually taken it off the car again.