What size are the tires and are they the tallest that will fit. I know you adressed tire hight however Discount Tire has a very strict corporate policy regarding the installation of tires that differ from the vehicle manufacturers specifications. Discount tire will only increase or decrease the overall tire hight and or tire width by a predetermined percentage up or down. My coworker worked for Discount Tire all through college and informed me of this policy when I changed the wheel and tire size on my mustang. Policy's may have changed since then. Did the tire tech test fit other tire sizes on your vehicle or did they just look on the computer and tell you what size will fit?
Did you measure ground clearance from the lowest point pre and post lift and pre and post wheel and tire swap? How much total ground clearance did you gain?
I'm aware the sport starts life lower than the other trim levels did that impact your total hight gains?
Was there a major impact on ride quality, handling, fuel milage etc.?