RacingUtah.com's first time out on Miller Motorsports Park for 2007!  RU dropped by MMP to get a closer look at the new Mustang Challenge race cars.  This coming Friday and Saturday will mark MPRA's (Miller Park Racing Association) first event of the season, in which these unique Mustang's will be featured, and will soon be in it's very own competitive class.     Hit the jump to the GALLERY for many more images.  Talk about it in the FORUMS.