UPR's all new 2007-2010 Mustang Shelby GT500 Chrome Moly K-member - will save more weight and exceed any strength limitations of mild steel while allowing maximum header and oil pan clearance. This kit was designed for the abuse of hardcore drag race, road race, and Street Enthusiasts most importantly it will handle the everyday wear and tear of city & highway streets like that was it's main intent. The factory K-member weighs in at 44lbs our Chrome Moly K-member only weighs 18lbs saving 26lbs off the nose of your car where it's needed most. Can be used with both factory A arms and UPR's Chrome Moly Tubular A arms (in development - coming soon!).