I did some Pixel counting and it seems like Raad-2 has the same dimensions as MBDA Storm Shadow.
It looks like between 5.1 meters and 5.3 meters long and same dia as of Storm Shadow/ SCALP.
Thunder carries fuel tanks under the wings which are 5.5 meters long .
So dimensions may not be an issue with Raad-2.. but the other variant is the weight of the missile, which we dont know yet.
It is surely longer and thinner than Raad-1, but what's the weight?
Obviously Thunder has limitations about what weight it can carry under the wings.