The Gujarat Government has decided that the vehicles sold before April 01, 2019 will be able to get High Security Number plate (HSRP) fitted through authorized dealers of concerned vehicle manufacturer instead of the RTO/ARTO office, same way as it happens in the case of the new purchased vehicles.
More information regarding this can be obtained from https://cot.gujarat.gov.in/notifications-gu.htm. This was stated in the note by the Transport Commissioner’s Office, Gandhinagar.