After A LOT OF research and help from this forum i manage to make my car dry on the rear keeping the original hydroelastic subframe and arms. The advantage of this conversion is that you get a stiffer rear end. THERE IS NO NEED TO CHANGE THE SUBFRAME if its in good condition. I will edit the video in the week i made a completely diy on how to do it.
When you do this conversion YOU ARE GOING TO NEED hi lows on the back because the original trumbets sit so low that the 10" wheel touched the fender. I put also the adjustable camber and caster kit from minispares and i changed the stub axles with dry ones. Easy cheap and the car handles like a table as we say in Greece. In the front we used a dry subframe because the hydro was so bad that i didn't do anything. This was the first Ride and yes i am so big for the car that is ridiculously how i fit inside. 
. Enjoy
