it might be, not sure, look at the drivers side of the fuel rail where the lines are on it, if there are 2 lines coming off the rail, its a return system and your lines are already there. If its just 1 line then you'll need to run the extra line

 

I'm in luck! the 2.5 runs a return line. One more thing crossed off the list. One final question. Does anyone know if the I4 and v6 clutches are the same?

 

Nevermind I found the info I needed. The v6 has a bigger OD. I'm assuming im gonna have to replace the I4 with the V6 one?

 

the 4cyl one... if it will even work, won't hold up to the extra torque. i've never really played around with 4cyl trucks... no point.