I emailed RS and posted a question on the official site about the rules for the upcoming xmod competition series. I got an email response to watch the website for upcoming info.
Meanwhile, what do you think the classes will be? Class 1 - out of the box. Class 2 - stock stage 2 with rs mods. Open - ?
I am thinking that even in the open class motor size will be restricted to 130 and bats to 4 cells. I am going to guess that you will have to use an xmod can.
If that's true than the focus on mods should shift to making the best stage 2. If you want to build a winning car.