I found there are two diameters of lat emodel commodore calipers.

VN v6 seemes to fit on a smaller disc, and should be a good starting point. Finding smaller diameter verada disks could be a bit tricky, but certainly not impossible. I have examples of both sorts of commodore calipers, but it would take me a couple of weeks to measure them up.

Buuutt.

The VN-V6 suits a 270mm x 22mm rotor.
The VL Turbo/VN V8 suits a 290 x 22 mm disc.

KR/KS/KE/KF/KL(not 4wd) Verada = 276 x 24mm

So if you can find a 270mm with 22-24mm thickness and 45mm height.

It'll all be apples. I'll have a look through the DBA catalogue.