Poking around I see that the S650 Dark Horse added strakes behind the front tires to divert the underbody air behind the front tires towards the outside of the vehicle. I've seen Verus Engineering has something similar for their underbody kit, but you have the buy the wheel well and underbody...
I swapped out the GT350 black calipers with the GT350R red calipers.
I installed GT500 valve covers and the GT500 passenger air/oil separator.
The vehicle has 5,000 miles on the odometer.
2017 GT350 black calipers, They have new brake pad hardware installed in all 4 calipers.
Front Calipers...
I installed this on my GT350 in 2023 and it has about 150 miles of use over 3 months. I removed it and installed the GT500 valve covers and the GT500 air/oil separator in 2024. Asking $125 shipped.