indeed yours is the dorman replacement, however it is for the 99-01 4.6. but were the failure is that it doesnt have the deep intake runners that help produce the extra torque and horsepower. (its not the shape or size of the ports, its the longer runner size that gets the job done, it helps produce more velocity). i would set it aside and eat your lose and look some more. try the salvage yard look for mustang 2002+(only because of the aluminum x-over), crown vic and grand mrquis 2002+. i can usually pick em up for $35-$100