I swapped my black brembos for the Red brembos off of the 2019 Bullitt. Same reason I pulled off the two piece rotors, as I needed to go with 15" rotors over the 14". I wanted to go two piece Giro Disc, but they were out of stock and needed to be ready for a track day.
So $450 with GT500 Brembos and Stop tech rotors. So for S197 I would just need the backing plates and stainless lines are the other thing the kit usually comes with. Sound about right.