blackbetty

thinking about getting a 4.56:1 out back from the 3.55's i got, i know its going to be like night and day, my question is what size do i have in my 05 f150 4x4, im pretty sure its the same as the 2wd rears, is it 8.8" or 9" i know that if i dont change the front gear im screwed if i hit 4x4 but i dont use it and dont have a reason to....plus cant find a coresponding gear to put in the front diff, anyways if anyone has a gear they have used let me know and point me in the right direction, i was thinking summit/ford racing but let me know