That arm won't fit the M35, it will only fit the V35. M35 has the mount in the arm for the shocker to bolt to it where as the V35 shocker does not bolt to that arm.
The cradle in your pic is an M35 cradle as you can see the bolt still in the factory arm where the shocker bolts to it. Notice that a/market arm has no place for the shocker mount bolt.
This is the factory M35 rear camber arm modified in Japan by a company called Nagisa Auto and cost 85,000 yen in Japan, so well over $1000AUD via Streeter or Import Monster.