ZZs won't drift, you can get them to slide, but being binary control you just don't have the fine adjustment for the inputs needed to really drift. As for the AWD thing, I'm going to call bs, the only reason that would help drift is to give you understeer which can be tuned into a chassis incredibly much easier than installing AWD!
With that being said there are still many things you can do to Slide Your Ride...
-Tire/wheel kit has lower grip tires,
-Remove the rear tires completely,
-Spread water out on a table or floor,
-Get a "Cars" series ZZ,
-Dual Cell,
-Stacked Fets,
-Get a "Cars" series ZZ and remove the motor resistor,
-Li-po power
I could go on, but you get the idea...
If you want, you can have so much power that breaking traction won't be a problem, but finding any traction will be!!!