Acura took the wraps off its 2018 ARX-05 Daytona Prototype international Thursday night in Monterey, and with all the sharp edges and branding accents in place, the new Team Penske-run factory cars should bring a stylish new appeal to the DPi field next season.Unveiled to the media one day ahead...

IMSA team owner Mike Shank discusses the new, larger 3.5-liter twin-turbo V6 Honda engine he's using in the back of MSR's Ligier JS P2, and his approach to the upcoming Prototype regulation changes for 2017.[youtube https://www.youtube.com/watch?v=Ljgjp-miLAo]