I know little about these people.
But since we are going into quite a bit of detailed analysis of the people of Pakistan, it is better to keep a separate thread to prevent confusion.
From what little I know, Balochistan is arid, undulating, thinly populated but still in the many millions, maybe 15 million people. We mostly hear about them when they blow up some gas pipelines in the region, or the Iranian part of the Baluchi population is persecuted or when Pakistan explodes nuclear weapons in the region.
Recently the opening of the Gawadhar Chinese naval base in the region has grabbed a lot of Indian eyeballs.
4000 years ago the place was probably much less arid and was the cradle of early agriculture in the pre and proto -Harappan phase. The Chalcolithic community of Mehrgarh is of course the most famous of these.
Would welcome some information on what these people are currently like and what has been their history in the intervening 4000 years :-)