control arm length

hello
i was wondering if anybody knew the approximate length of a lower control arm of a 4.5 inch or 6 inch lift. i mean like the distance from the center to center of the bushings or how much longer they are then the stock arm. not long arms either just replacement arms
I might have to make some control arms for a little while becuase money is kinda tight
oh by the way this is my dads account but i also have cherokee of my own and i am currently lifting it for my senior project for school

GO here

http://www.lunghd.com/Tech_Articles/Suspension_Steering_Axles_and_Brakes/Control_Arm_Chart.htm

Great little chart on control arm length.