Found a used 2017 Trek Domane SL6 on marketplace for 400 AUD. Took the wheels off and transferred them over to my Supersix and I'm happy with the result.
Wheels still have butyl tubes, heavy 105 cassette, and worn out tires but planning on switching them out for lighter alternatives when new tires arrive.
More about the bike:
2019 frame
Vision Metron 40 SL
Everything is carbon except the crankset and stem I believe.
Dura Ace 9100 groupset with Power2Max power meter
7.4 kilos as pictured (will expect closer to 7.1 with upcoming mods)
by valvze