Nothing against the drift guys, but it's such a completely different gig and a different mindset that I'm not sure it fits with what you're doing. If nothing else, I'd be concerned about them "hitting stuffs" around the track and leaving you either responsible for it or worse yet ruining your relationship with the track owner, or your good standing with your insurance company.

Generally speaking, most of your autocross and track day types make a pretty strong effort to not damage their cars. From what I've seen, in the drifting world, breaking the car is just part of the game. Consider the liability.

I know of at least two locations that have banned drifting due to property damage or percieved carelessness. (SPC and OGP)