NASCAR confirmed that Cup Series teams are receiving a rulebook bulletin this week detailing the updates to the car for road courses and a majority of tracks measuring 1.058-mile or less in distance.<br>The package, which was tested in the offseason at Phoenix Raceway, will debut at that track for its March 12 race.<br>It consists of a 2-inch spoiler and the removal of three diffuser strakes and ...<a class='more' href='https://www.motorsport.com/nascar-cup/news/nascar-new-rules-package-road-courses-short-tracks/10437658/?utm_source=RSS&utm_medium=referral&utm_campaign=R SS-NASCAR&utm_term=News&utm_content=www'>Keep reading</a>

More...