Direct SF Non Stop train is required from Gandidham/Ahmedabad to Guwahati.Humsafar would be best in current scenario and can run via Ahmedabad,Surat,Nagpur,TATA,Asansol,Rampurhat,Mald a Town,New Jalpaiguri,New Coochbehar,New Bongaigaon(Goalpara Town).