Wolf I have an older RS4 nitro here that I had thought about trying the drifting with. But from all of my reading, they don't make the best drift cars to say the least. For one thing, most drift guys are running ABS or PVC for tires, and drifting at slow speeds and constantly feathering the throttle. On a nitro mill, that equates to basically no load on the engine, or almost the same as free revving it. I know you need to richen the engine up quite a bit as well, as you won't be getting the normal amount of air flow over the head at slow speeds. At that point, throttle response will probably suffer, making things harder on the driver as I doubt the engine will want to rev cleanly having been richened up so much. I think electric is the way to go for drifting. But hey, if you already have it, it might be worth a shot. Just keep an eye on motor temps.
I'm going to buy some spare TC drift wheels, and second set of shocks that will be travel limited for a much lower stance, and just use my MERV to try it out. Costs me very little cash if I don't like it that way.