I've looked into so many part numbers for several different Ford vehicles, and I've come to realize, that the front brakes on the 15+ TC are Focus Brakes, which means any big brake kit for the Focus will work on the TC.
Pumaspeed has the Focus RS Brembo brake upgrade kit for only $650, but you need to have an 18" wheel or larger, and if it's an OEM 18", like a stock FOcus ST Wheel, you'll need a 5mm spacer to clear the caliper.
I plan on going for the RS brakes in the future, but there are other, more pressing mods to do first.