To build on all the good inputs above, I'd suggest first remove the right front stabilink and go for a short drive. You'd want to do it with both wheels on the ground (on ramps) or entire front of the car in the air to prevent windup of the stabar. An air gun would be handy for removal, not for re-assembly. If one of the stabilink joints is the culprit, the noise should be gone. If the top mount (what you refer to as strut bushing) remains suspect, I would take it to the shop. It does require disassembly of the strut module including removal of the spring with the use of spring compressor(s). This operation can be dangerous and should not be attempted without experience and proper tools. You could also damage the coil spring coating with the wrong compressors or technique and initiate a corrosion-induced spring failure down the road.
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2016 Black, 6M, sunroof, custom wheels & spare, CAGS defeat, Holden badging, black trim