Hey, i've tried it this evening and it was a hell of alot fun.
the PVC works like a dream, im goin sideways like there's ice on the road.
the yokomo drift tires has more grip though if compared to PVC.
the motor got pretty hot at the end of it, so i slapped on one of those
alum heat sink thingy that looks like an extruded comb on to the motor. dont know if it would help.

p/s i dont think the old guy who sold me these stuffs knew how much they worth. (neither do i)
he just want to get rid of them along with the furnitures and used clothes during the garage sale.
btw what kind of drift tires are you using magnat?