Re: Graco Size4Me question
The S4M installs very upright even in the recline position as long as the ball is still in the green. I've gotten it RF in a 2-door Honda civic with the passenger seat all the way back.
As pp said, lean your weight at the foot of the car seat while installing to get it more upright. I think I measured the seat with the headrest fully extended at 29" deep front to back which is very small. Also check that the vehicle seat you are installing behind is not reclined. You can push the vehicle seat back for legroom without reclining the seat.
Maybe share a photo and we can make install suggestions.