Torsion bar setting

I am disassembling the steering and suspension of a '72 Duster. I heard in a recent video that the present factory setting of the torsion bar should be denoted prior to doing this disassembly. Exactly where does one look to see what the pre-disassembly setting is? I'm sure this is very critical and should be done prior to disassembly.
Nothing critical to check before taking apart. As said. read up on the details in FSM. If you don't have one they are on Mymopar.com. Make sure your bars are correct and L and R on correct sides. Driver side =Left. Be sure the suspension is relaxed/hanging down when bars are put back in or you wont get enough adjustment. There is no clocking on factory bars.