First we started with both the inner and outer splines going into the Hub and the Differential. We have been working with Ovaco steel out of Sweden and they came up with a material called Ovaco 300 that has been used by DSS in each and every IRS/CV driven world record breaking car to date (includes Mark Carlyle’s amazing Vette running 6.82 with a 1.1 60ft time and many other cars in the 7's ,8's and 9's also).