It is an assumption that the language spoken by isolated tribe in Balochistan is related to proto-Tamil, the language supposed to be of that of Induz valley. Your assumption that sanskrit script is Devanagiri is wrong , since olden times sanskrit was written in Brahmi script. Also Pali,Sauraseni,Magadhi etc were Indo_European languages and had no connection with Tamil andDravidian languages... Also Jainism is an Aryan(propogated by Brahmin and Kshatriya turned yatis (ascetics)like Rishabha,Mahavira etc) originated faith and NOT Dravidian one (I mean south indian).Do not hijack the Brahmi script which is originated around 500 BCE as said by historians and they disagree that it is induz script. And sanskrit is as old as 3700 years (1700 BCE) as said in wiki entry for sanskrit.However it may have evolved slowly in to classical sanskrit. Now Pandyas(Oldest Tamil dynasty) were noble Kshatriyas(Aryans) and not OBCs and Shudras as said by you otherwise how will purans say them as noble Kshatriyas??? WIll Brahmins acknowledge them as Kshatriyas??? ""Remember even Rajshri Sivaji the Maratha was NOT considered a Kshatriya by Brahmins of Pune."". Even sanskrit names for places and kings existed in SriLanka (as told in Buddhist histrory record Mahavamsa) as early as 500 BCE(times of King Vijaya). sanskrit and Indo-European names(even pali,prakrit) we kknow is of Aryans and NOT of Dravidians. So how come in TamilNad and Kerala there were no Aryans in 500 BCE but (geographically separated)
