yea the auto tranny ecu makes 20hp less, but has more midrange torque. In other words, make sure to get the MANUAL ECU!!!!!!!!Originally Posted by Ludester
BTW the F20B will bolt up to any f series or H series tranny. I suggest a 4th gen jdm tranny with LSD, or a 5th gen jdm with LSD (The 4th gen are easier to find).