Rear End Set-up on 72 Dart
This is the way I remember which numbers go on which side.
The drivers of mopars are always odd... Odd number goes on driver side on US based cars.
If the springs are good and you use clamps on front segment, snubber can be a door stop.
Pinion angle is going to be a guess. Make sure when you are setting it up that the car is at full weight with drivers weight in seat. Most SS spring cars I've dealt with, anywhere from -4 to -8 on angle. Street driven at all, try to stay under -4. -5 and up tends to stress U joints.