Thank you, Fastinfastout.
I made the batt.holder from a 5mm carbonplate with a dremel and a diamond disc. As you can see on the picture I used some Integy 3cm alu spacer for the emaxx bulkhead(I dont remember the part n. but I can find it for you), then I cut them the size I needed, and on the two in the rear I put some heatshrink for vibration.
With the Orion lipos, if you want, you can use the stock Durango holder, like I did in the beginning but then you have to put two 0,5mm spacer under the 320001 , you need also to dremel off a bit of material so that the slipper nut doesnt touch the lipo holder-stopper, 320001 and two 0,5mm spacer under the ring 310039, here you can put also a bit of foam between the two spacer like I did on the picture. It works for me, I hope it will work for you too. I hope I could explain myself, my english is not so good.