Installing Graco Naulitus for a friend--have questions

[HIU8]

I'm installing a GN for a friend in their corolla. I've never installed this seat before. Is there anything I need to know about installing a GN in a corolla. I think I remember reading that the entire base of the seat must sit entirely on the seat of the car. Is that true? What happens if there is a bit of hang over?

[Neatfreak]

That's the only thing that I remember about our GN being different from our other seats. Otherwise, it's really straightforward for both LATCH and seatbelt installs, and using the tether anchor. Adjusting the crotch buckle position was a PITA for me, though.

If there is overhang, technically it doesn't fit in the vehicle correctly and it shouldn't be used, per Graco's instruction.