Was at Leif Johnson in Austin, TX this monring getting the oil changed in my girl and counted 15 2005 Mustangs... 12 v-6 and 3 GT's... the two GT's I looked at- 1) was Redfire with parchment interior and IUP... the other was white with the same the third was Sonic blue but not sure of the setup... had plenty of V-6 with and without the spoiler