@tygertyger: Your criticism is on point. And I thought hard about how to get on with vertical posts. I couldn‘t find a solution without having to hack the parts. Custom designed parts are not allowed. But you can use parts of other Tamiya cars like the TRF suspension. With this car I stretched the rules. Nevertheless if you have a good idea let me know.
@jag88: Rear arm mount not only allows for a toe change, but also for kick up and anti dive adjustments and with it rollcenter changes. A nice improvement is, that I don’t need another brace to stop the hinge pins from falling out. Of course it was not needed much setupwise. The car has nearly every tuning part I can imagine, so why not make it perfect