New IROC series announced

Aone-make retro Porsche series is on the drawing board for 2015. The IROC Challenge Series, utilising 1970s vintage 911 3.0 RSs lookalikes and paying homage to the inaugural International Race of Champions series of 1974, is the brainchild of Historic racing identity Rowan Harmon. Cars must be presented in one of the original 16 IROC colours, with a maximum of three vehicles per colour. More info at motoringevents.com.au