YATALA, Queensland, Australia — official team release — Erebus Motorsport photo — Erebus Motorsport has confirmed the signing of rising star Ash Walsh as the pilot of the #4 Mercedes-Benz E63 AMG for the next two years. Joining experienced V8 Supercars pilot Will Davison at Erebus Motorsport, 26-year-old Walsh will receive his first full-time V8 Supercars drive in 2015 after …