QA1 Six-Link Rear Suspension Conversion Installed

No they did utilize their coil overs but for the steering the old style hardware had to be used.
Um.....no. they use Torsion bars.

Handling Suspension Kits for 1967-1972 Mopar A-Body | Dart, Demon, Duster, Valiant & Scamp Full-Vehicle Suspension Upgrade | QA1


http://www.qa1.net/tech/documents/52313, 52314_REV_8-16-2013 Mopar K-frame.pdf

from their own instructions:

"3. Count the number of revolutions it takes to remove the tension from the torsion bar adjusters in the lower control arms. Take note of this and use it during the assembly process to duplicate the ride height."

"Clock the torsion bar keys and re-install the torsion bars and snap rings. The K-member may need to be adjusted in the car to get the snap rings in and fully seated in the grove and for proper engine placement. 6. With the torsion bars in place, the lower control arms can be reattached to the ball joints. Tighten the ball joint nuts to factory specifications and install new cotter pins in ball joints. 7. Tighten the torsion bar adjusters the same number of turns required to remove"