I have to ask - why do you want to spin the wheels? Subaru went to a huge amount of effort to design a car that tries its best to NOT spin its wheels, regardless of the surface. That effort is reflected in the relatively high price of your car compared with 2wd equivalents.
An easy way to spin your wheels is to spill oil in front of all 4 of them. Then you'll have no traction at all, but you may miss it when you want to stop
One trick you can do with your car that most others cannot manage is accelerate and corner safely on slippery surfaces like snow and mud. You've no advantage when you're stopping, though.
The loud and horrible sound is either traction control cutting in, or the gearbox or one of the differentials going out in an interesting and expensive way.
If you're looking for something to drift in (again, why?), you need a surplus of power over traction. With 4WD, you have a lot more traction which means you need a lot more power. Rear wheel drive tends to suit drifting better. If you cannot stretch to huge budgets on tyres and horsepower, you could buy a cheap MX5 and fit skinny 2CV wheels to it. You'd have no problem breaking traction then......
This isn't a troll, is it?