Thx guys for the feedback.

Im now looking at 2 option to fix the sun glare problem.
1. Getting a tempory cover above the screen that clips in/out when required to provide shade for the screen. This is the cheapest way. Might not be the most pretty.
2. Changing over to a single din unit with fold out screen. Most single din screen allows u to tilt the screen forward and back. So if the sun hit the screen, during the day, I can just adjust it more verticle to avoid the sun. This is going to quite expensive.

BTW, is there any other way for the instument cluster to display date, time etc without factory head unit? My installer said the only way is to plug the unit back in and hide the MID in the glove box. Not going to be easy....