It is a 2005 f 250

 

depends. most kits come with new front springs and shocks. compair old spring to new one. also rear block measurement. the back is normally 1-2" shorter so say the block is 4" then the lift will be a 6" lift

 

Measure from the bottom center of fender to center of front hub on a known stock truck and than measure yours.

 

Post a pic and I can proabably tell you just by looking

 

Measure the front, because there is more consistency in lifts on the front. Rears vary by too many factors.

Measure from the ground to the apex of the wheel well arch. Or the center of the wheel if you prefer.

My stock height truck measures around 40" from the ground to the apex of the wheel well arch, with 33" tires.

What is yours?

 

47 in. with 35's

 

That would be a 6 inch lift most likely

 

Sounds about right to me.