A ~$30k race car - especially one in a fully televised, professional series - is cheap. You couldn't touch a competitive World Challenge car for three times that amount.
I'm skeptical that "simple bolt-ons" are going to bring the MZR up to 100hp/liter output. My guess is that those sealed engines will be substantially reworked compared to production motors.
Still, I'll be looking forward to seeing this series!