http://www.motorauthority.com/news/1106388_ram-just-unveiled-the-hellcat-powered-ram-rebel-trx-concept?fbfanpage#image=100567713 Man that thing sounds badass!!! :C:B Texas State Fair link
The rumors for the 2018 are the new twin turbo 5.0 L ecoboost pushing well over 500, possibly closer to 600. The 3.5 ecoboost in the ford gt is already pushing 600 hp and that is only a 3.5 L