I was debating that as well. At least with my screen the stock opening is not the exact size of the screen so you're screen would probably fit, but you'd probably have to epoxy in the screen's frame to the stock dash piece or see if you can find someone on here who can make you a generic frame for you screen that would then fit into a double din dash opening. If you do that then you either have to use separate amps if you're going to totally do away with the radio, or relocate the radio somewhere else. I just don't have the time right now to do a whole lot of messing around with it to try and relocate the radio and get the screen flush in the opening. Something you could do is buy another second plastic trim piece (either through dealership $$$$, or see if any part supppliers or junk yards have one) and then modify that one to house the screen. If you get rid of the car just put back in the original trim piece. From looking behind the radio you shouldn't have to modify any of the structural parts of the car.
About LCD.. A part of me wants to remove the stock radio and another part of me wants to mount it on those hinges.. I would like to be able to trade my 'Nox in one day and get something better, so I would like everything to be reversed. If I mount the LCD into the dash is it reversable? Also does the 7" Lilliput fit right inside the radio location or would I have to remove the case from the lcd?