It is your choice , I have let them hang down as far as needed to get the job done, I slide the torsion bar back into the tranny crossmember to keep it close so I can slide it forward into where it goes when I'm assembling the rest (lower control arm) of those parts CRS
The 1970 Charger R/T I rebuilt the front end gave me a little battle on assembling the driver side LCA and torsion bar, the passenger side went together like a dream Dang Murphy anyways Let us know how yours goes