Anyone know if it is possible to replace HU and use my stock casing?

Currently with stock Toyota 7 inch I want to have better sound if possible, priority is compatibility to upgrade clearer reverse camera. Other will be extra.

Looking at;
1) Eonon - I like this design cos my dashboard design very ugly. It probably looks better with 2 round button.
2) Dynavin - Price wise look attractive for Dynavin? Suppose to have local warranty and support.

Any of it good? Any recommendation for around RM1K?
Thank you in advance.