Can someone please clarify this for me. Looking at the specs for the Stock Torment Brushless 2wd they mention upgraded drive shafts under key features as per link: https://www.horizonhobby.com/ECX03008 . When you look at the drive shaft part number that comes with this truck, it's the same as listed under the normal brushed torment. Did ECX upgrade and improve their standard drive shafts lately from a previous version?? Or is this just a sales gimmick?