Do your research contact J7 or Sati on el presa I would imagin they will be happy to help you guide you in the right direction I have put alot of hard work into mine they are not a dog to be taken lightly. Temprement wise mine is great but I wouldnt like to get on the wrong side of one with bad blood def not, as for Imported ones not sure if that would be right everytime as one has recently been pts after breaking its owners arm with multiple stitches as you can imagin.
The pups have all turned out different Rocky my sisters is now about 28 inch and is a monster they are all totally differe