Some good news,
They did call me today to say that those upper billet arms are now ready for shipping and that the reason for this delay was that they have change the desing a bit and suplyer as well, they did reseve first pair of those today and will ship it to me with out any cost. ill keep you posted and send some pictures when they arrive...

btw: Also they told me that now they do assemble all the parts to front and rearend kits before shipping so this kind of problems will no longer happend
and i think that is progress !!