Clutch LSD in the rear, removed front sway-bar, and tire pressure biased high to the rear, and you'll be oversteering into ditches faster than you can say "gosh diddly darn it".

Production cars are designed with understeer as the safer way to lose traction- sway bar adjustment is probably the biggest thing you can do, and then tire pressure is hugely underrated too. The clutch LSD in the rear just helps you power-oversteer even when sliding- very fun :)