I rode in a friend's 36 Spectre on a hot, humid LOTO day with 5 big guys and full of gas and we were at 117 mph on GPS, bone stock. He bumped the ECU's later and a few other small changes and he was hitting 130 MPH on top end with light load. The 575's can be modified pretty easy to bump from the stock 550 HP to well into the 600's. Awesome video, it sure ran well!!!