I love this! I have a 2014 Mustang GT and I purchased it with the bare-bones brakes. I couldn't really afford to do the full on Brembos, but like you, I found these calipers for much cheaper! They are actually not manufactured by Brembo, but I put the Brembo decals on them anyways and tell people they are Bremb-no brakes. LOL
I masked mine up with painter's tape and painted them in a high-heat two-part epoxy.
I purchased the decals from Amazon for around $6. These basically are knock-offs of the 4 piston Brembo calipers that came on the Mustang GT Track Pack, so why not?
A car-club buddy of mine had upgraded his car to take-off Track Pack Brembos, but went with cross drilled and slotted rotors. I got lucky and he gave me the stock take-off Track Pack 14" rotors for free!
They look good on my Mustang!