Replacing all 12 torque-rod (dog bone) end links this weekend, preparing tools now. Anybody know the nut size hold the rear leaf spring pack together? I may need to take this apart to get to the upper center link end castle nuts. Not enough time to cut them off and replace, so they will be disassembled and reused. I'm at work, and forgot to measure them on my way out the door this morning. Thanks.