Finally managed to install the Toyota Double DIN player from Pioneer.
Installing it was PITA especially unscrewing the bracket holder from the old player.
Sound quality and bass definitely better than the stock player.

The stock speaker for G spec is already good enough to produce the bass and treble.

Streaming BT Audio from my N4 using Google Play Music and equalizer setting turn ON in phone can produce richer deeper bass..   

The rattling sound at the dashboard is also gone after I install this player. 

Player cost me around RM400.

The audio panel cost me about RM 175. OEM Taiwan. Still cheaper than buying ori. Quality almost the same as ori.