The cost of the PP package alone is a clue the brakes are the same.
I think Ford typically offers great value with their option packages, but for 1300.00 I doubt very seriously I'm getting completely different brakes along with all the other awesomeness.
Tire rack shows no differentiation between the two.
Car and drivers says....pads only.
"The engine and transmission remain essentially unchanged since, but our 2013 model had the SHO Performance package ($1995), which adds an improved cooling system,
high-performance brake pads, 20-inch aluminum wheels wearing Goodyear Eagle F1 SuperCar 245/45 rubber, specially calibrated electric power steering, a "true off" track mode for the electronic stability control, and a 3.16:1 final-drive ratio (standard issue is 2.77:1) to improve acceleration."
http://www.caranddriver.com/reviews/2013-ford-taurus-sho-instrumented-test-reviewI wholeheartedly agree with the guys saying change pads only.
I really would like to put those beautiful Powerstops on but I have serious anxiety about messing with the brakes
Too many "brake upgrades" end up being downgrades in my experiences.
Honestly both cars feel the same stopping power wise, the only difference is the PP pads seem to need a little heat before they bite the same.
Which is probably why they are more suitable for the track.