How is the alignment on 1302?

Wheel alignment and axle geometric construction on WV 1302 Super Beetle must be deeply considered really hard now.
Careful inspection of the constructive designing on Super Beetle led me to some conclusion that the wheel base setting must be performed first on this special Beetle, because the adjusting the rear trailing arm for toe direction independently invites the change of wheel base length finally.

So, the wheel base setting at same value right and left should be established first under the condition with being considered taking into the value of total toe. Remember here that the total toe direction, yes, thrust angle cannot be adjusted on this stage on rear axle construction with wheel alignment, because the wheel base length is dictated by the fixed rear trailing arm length adjustments.

Then how shall we establish the direction of rear total toe vector?

The only way left to do that is moving frontal strut upper mount laterally and lower arm adjustment in combination with the strut lateral movement.
Of course, tie rod length adjustment would be naturally invited at this stage.

Precision requiring adjustment like this needs concentration and keen & acute sensitivity on earth, in very near future this idea would be tried on my Super Beetle and resulting ---the steering reactions and stability would be very----? The future report would be awfully excited on earth!