Some updates:
I replaced the a/c in cabin filter.
Here whats the old one vs the new filter:
Then replaced the stock horns with Toyota Premium Horn Kit:
Also bought the HD Tv Tuner fitted to the car.
Also the screen stay on when i put the hand brake down, seems like the previous owner in Japan already done the TV over ride switch.
This cable plug into the factory tv tuner.
This is the Tv Tuner Kit and its have a USB input so i can play mp3z / Xvid movies.
I fitted the tuner under the passenger seat as the tuner is small enough to fit in there
For the antennas, i put one in the back windscreen and one on the front windscreen.
The tint in the back is really dark, so you cant see from the outside.
Some photos of the Tv working in the car!