The 07 and up have the TPMS, but you can get bands that allow you to reuse the factory sensor here: Universal Mustang TPMS Sensor Mounting Band and Bracket KitThats what i thought... I wanted to buy them. He said he had been trying to sell them, but all the other gts had 17's. Maybe an anomaly? Also do they come with the TPSM or can you add it to them?