One of my favorite upgrades to my car -
TSX calipers, Brembo rotors, Project Mu pads, ATE Type200 fluid. All streetable year round non-track parts.
I did this upgrade after I melted the piston into the backing plate of some pretty serious performance pads. I was getting brake fade on a long windy downhill mountain road. Thats when I finally realized I had overcome the stock system with upgraded pads/fluid. So unless you're constantly hitting track days or really really hard mountain/canyon runs I don't think you'll need a BBK.
https://www.google.com/maps/dir/35....83907,-82.8870031/@35.2512721,-83.0322452,10z
This is the kind of road that will need a brake upgrade. Over an hours worth of driving, easily hitting triple digits on the down hill side then hauling the car down to 40/45mph, back up to 90+, back down, repeatedly until there is smoke coming off your pads and the pedal starts dropping to the floor..... then.... then you need a BBK. I do fine on that road now with a slightly larger OEM single piston.