That kit only looks like a Mustang in that the panels and body are Mustang. The chassis is termed "Harbinger" by the company and is an extremely modern and stiff racing chassis platform. You'd be hard pressed to turn your Mach into that beast.
True. Their potential is limitless. BUT there are soooooo many of them. How many of these Mach interpretations do you see. It would stop me dead in my tracks if I saw it on the street.