I think anti-squat is only measurable with the use of suspension arms like touring cars or buggy?
Because it seems that the geometry of 4-links (on AX10) will not have much effect with anti-squat as the shock is not parallel to the travel of the axle
as brother edison showed us, internal lower spring config will eliminate torque twist because the will not be any room on the shock for eating up the torque in stationary position
i use droop already at the front, so need to use droop also at the rear?
yes! all droop setup
because a conventional shock setup using outer shock will have room to be compressed, so the torque that cannot be transferred to the wheels will be transferred to the shock by the drive shaft rotation