initially mk2 was simple engine swap from 404 to 414 GE and upgrade radar to aesa and increased maintainability ( initially no to slightly increased in dimension and mtw )
but now it is whole lot of changes
https://hal-india.co.in/Tender_Details.aspx?Mkey=63&lKey=&Ckey=MjMzNDQ=&Divkey=MTY=
Request For Information (RFI) for Tyres of MWF Aircraft.
TECHNICAL SPECIFICATION OF TYRES – MWF