Looks plenty fast to me. Sounds great too.
I hope the people who run the BRC allow these cars in soon. Rather than the top category being the horrid little understeery Citroens and Fiesta R2s
As a side note, I remember when I first read about this category (when it was still referred to as R4T) and thought they were just going to be like R3Ts with four wheel drive underneath. Thank God they're nothing like that! Loud, fast and bulging at the wheel arches :D