Hoping that this info works in game.
Indeed it did! I was amazed at how easy it was to drift with that type of setup.
Anyway for those interested, here's how I'll set up a car for drifting nowadays:
Power: 400-500hp for DOT tires, 200-400 for Y rated.. wide powerband helps.
Tires unchanged
Gearing unchanged
Camb -1.0/-0.5 (0 if live axle)
Toe 0/-1.0
Cast 7.0
ARB 35/unchanged
Spring unchanged
Rebound unchanged
Bump both +1.5 from default
Brakes 45-40/user pref
Diff unchanged
In 9 out of 10 cases, this will produce a car that is very steady but can easily be flung sideways by flicking or overpowering - or even braking. It's extremely hard to spin these cars, but you need to be aggressive with the throttle or it'll grip.
I even applied this tune to my racing Monaro and it works a charm - although I reduced the caster by 1 degree and the rear bump by 5 clicks. It's a bit understeery, but you can get on the throttle much earlier and harder without breaking traction.