The guys are testing new bits. I know of a couple of drivers who have items that we all will soon smile over and that won't cane the pocket either..so bare with them as they need to test it all before it is released and organise mass production of parts too.
The long chassis Jorn runs is a hand built one off prior to any of the tresrey/RDRP etc etc, so discount that from testing in that sense. However Durango do have a +chassis actually made by them in testing (don't ask questions as thats all im going to say
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As for other bits the guys are using the Durango gear as best they can to make the car work in differing cenarios. It would be nice if they can show us how they get the shocks on the rear of their cars etc etc in MM4 format, but it may actually be that they are having to do work outside of the Durango perameters. You can understand in that case they may not be totally forthcoming with what they are doing as if it goes wrong for a 'general public' racer they may try and create a backlash. I remember years back racing for a certain company I made changes to a TC that went way past the standard kit. Thing is one heavy shunt and the front would fold up. As such the change wasn't publicised heavily due to that. So give them time, at some point more info will eak it's way out.
As for help from the guys they are very very helpful. Ellis is a credit to them as are the other guys. Yeh sure right now Durango need to pick up a bit regards getting parts available, moving perhaps some of the test stuff to production, but in fairness they have some of the best team backup in this area of the sport !