I have two sets of Weld XP wheels. One set is a Rodlite XP and the other is a Prostart XP. Both are size 15x9 with 5.5 Backspacing. These wheels are extremely hard to find and fit IRS cobra's and Mach 1's as well as clear the rear calipers on the 2005+ Mustangs. On the 05+ they do stick out past the wheels well by about 3/4" but if you are running 26" tires this is not a problem. I have run both sets on my 05 at different times. I am looking for $400+ shipping if required for a set. I will take pictures and post up in the next few days.