It became a part of a group of shows called the Powerblock, currently shown on Spike TV, on January 7, 2006.
The original co-hosts of the show were Lou Santiago and Jared Zimmerman, however midway through the first season, Zimmerman quit to return to Rad Rides by Troy, the custom car shop he had been employed with prior to joining the MuscleCar team.
After Zimmerman's departure, Santiago remained the show's only host and relied on various shop assistants and fabricators to help with tasks when they required more than one person.
However, he made his first announcement while being interviewed the week following October 26, 2007 by Kevin Oeste of V8TV, at the SEMA Show in Las Vegas.
On the July 7, 2012 episode of MuscleCar, it was announced that Rick had been replaced by "Hollywood TV and movie car builder" Steve Mank.