I just installed one about a week ago on my 2007 2.0 part #s4110 listed for SVT it will replace from flex back and replaces the second cat with a resonator.You need #s4110 if you want a complete bolt on flex back 2.5" MBRP exhaust.Im pretty sure the #s4040 is 2.25
One warning. If you have an ATX and a 2.0, you probably will not like the 2.5" exhaust. MBRP custom fit an exhaust on my wagon and while it gave great upper power, it robbed the bottom end so much it made the ATX feel even more weak. Once they refitted with a custom 2.25, all is well again. I don't know if they have made a new part number up yet, but be aware.