www.motoiq.com did a comparision of 3 different motor configuration from different Formula Drift cars.
Therere is no arguing that the LSX engine is most suited for drifting with 400 ft/lbs from 3K with instant lag free transient response and half the complexity of the other engine setups.  At ~ 100hp/litres it's not even stressed.
Read the whole article here including the heated discussion in the comments section: