If is best when you torque the Bolt that Goes through the Fender Well if the Wheels are on the Ground. That clamps the Rubber Bushing in sort of a neutral position with no flexing of the Bushing. (The same with the Lower Control Arm Bushings.)

Next best would be if you put it on Jack Stands keep both sides at the same level and not raised any higher needed to get the Wheels off.

What do you plan to use to detach the Upper Ball Joint on the UCA from the Knuckle?

The tips of the Sway Bar are often rusted thin to the extent they sometimes break off. If the Tip breaks off there is 2 possible repairs for that.

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84 300D, 82 Volvo 244Gl Diesel