 Complete the following phrase:  In December 2015, Viper Exchange announced they would again be sponsoring two Vipers in the 2016 running of the 24 Hours of Daytona. Keating will once again take shifts in both the No. 93 and No. 33 Vipers as he seeks to defend his 2015 victory. Keating will be joined in the No. 33 by Dominik Farnbacher, who helped drive the No. 93 to Daytona victory in 2015, and 