Control arm length........

hey i was wondering if anyone can help me with control arm lengths, im putting together my lift, 4.5" springs/leafs, 1.5" shackles, 1/2" block, 2" spacers to net a total of 6.5". ill be using re drop brackets, so my question is what length arms do i need, upper and lower, for a ~6.5" lift with drop brackets? and any thoughts on rustys arms?

Read the write up Yuccaman did.

http://www.yuccaman.com/jeep/re_db.html

Buy RE or Currie arms.

The ACME threads on rusty's arm tend to get sloppy after a while.