You don't need those Lilliput button if you do an
auto on mod or you have to relocate the IR sensor for the remote. I didn't do that mod yet. Basically if you remove the button, you
should relocate the IR sensor to control the LCD.
The Lilliput will fit the 03-04 Matrix if you cut the bottom part (button portion) of the Lilliput housing. 05 Matrix is a little different cuz the radio openning is a little wider.
Fab the Lilliput housing to the radio bezel is the best option I think after thinking of all the possible way to put the LCD.
Escalade182 I know the Supra installed is
bad but that is the
learning process for the Matrix. The dash material on the Supra is different cuz nothing I found/available to me could make the screen frame stick to the radio bezel. One day I will redo that with a 7" and probably a Xernac or something better cuz the car will be "classic" car for me

. The PSOne is small but it is much better than the Lilliput.