Grantha Script.

In some quarters, it is suggested that Grantha script, a modified form of Tamil script, used to write Sanskrit texts etc. instead of using Devanagari script,
can be used to write Sourashtra language.

Sourashtra language has got a beautiful, scientific, modern, simple and uniform script.
So there is no need to use Grantha script for Sourashtra Language.
Already, the Devanagari script supporters could not do anything for the development of Sourashtra language by using Devanagari Script.
Recently they are trying with Parivarthit Devanagari script !
Even in this script, two more symbols to represent half yakaram and nasal marker are not provided.
It is a pity the supporters of Devanagari Script has not studied the books written by Sri T.M.Rama Rai. Had they studied the books written by T.M.Rama Rai in Sourastra script, they might have realised the need to provide two additional symbols required to write half yakaram and nasal marker which are peculiar to Sourashtra language.

Sourashtra language has special sounds which are not available in other Indian language. Hence, it is not possible to adopt Grantha script for Sourashtra Language.