619GL-70NP/C (3rd one) is very similar to the one I have. You will need to remove the outer casing to make it flush fit, but its pretty easy to disasemble if you are competant at DIY. The main thing to check (via MP3car.com forums most likely) is that you can make the screen come on when power is supplied. Otherwise you have to press the button. Usually you can enable this through the service menu.
Looks like you are on the right track, but its been a while since I installed mine, so may want to check out mp3car.com for the latest models. The newest ones come with transflexive screens which means they are much easier to read in sunlight, which is one problem I have with mine.
HTH