Before buying the Airaid, consider the FRPP. I had both on my former 07 GT at different points, and I preferred the FRPP over the Airaid. The FRPP looked better, installed easier, and performed better. Both intakes were used with the preloaded Diablosport tunes. The other mail order tuner that I tried was a nightmare.
The Airaid 450-172 comes with Airaid's removable Modular Venturi Tube, which keeps the MAF diameter the same as stock allowing it to be run with the stock tune. The MVT can be removed for use only with a tune that accounts for the resulting larger MAF diameter. With the MVT left in place, it's a waste of money in my opinion. The "Race" version is the same intake, but without the MVT.
The FRPP CAI is very similar to what was used on the 08-09 Bullitt, and would be my choice again. It requires a custom tune, and I experienced better performance with the FRPP compared to the Airaid.
I've attached pictures of both intakes as a reference.
Present: 2018 Mustang GT (MT): Shadow Black
Past: 2007 Mustang GT Premium (MT), 2010 Mustang GT Premium (MT)