The only modification is to move the EGR connector like 4 inches up. As you can see in the pics there is an EGR connector below the coonection but that one was welded shut.
I paid $290 for the header and downpipe and $150 for the labor. I noticed that my car started pulling to the side when launched in first. It feels like the torque steer I felt on the Mazdaspeed test drive. I'm gonna get it dynoed next week. The whole combo, AEM SRI, header anf Ractive...
It cost $290 and you gonna have to call them to find out if they can do the mod and ship it like that. It comes with the down pipe, so there's some modifications that need to be done.
It also eliminates the first cat but the down pipe has a connector for the O2 sensor. I'm posting pics right now.