I have an 01 F150 and want to get a LSD for it. I dont know much about posis just general info and was wondering how i choose which posi fits my truck? how do i find which ring size i need?10.5? 9.75? 8.8? ect. and what are some good posi manufacturers out there?

 

what engine do you have?

go check your door code and tell me what it says under axle.

the 5.4 comes with the 9.75 all others get 8.8.

chances are you already have a limited slip. tell me that axle code and ill check!

 

I responded in your other one too bud. Look at your other thread.