I'm 6 feet tall, and have TONS of headroom leftover in my 03 Accord Coupe. What cracks me up when people talk about headroom is that they always say "I'm 7 feet tall and have plenty of headroom." or "I'm 5 feet tall and feel cramped". Folks, it's all about how long your TORSO is. My brother and I are the same height, only I am all LEGS and he is all BODY. So I have tons of headroom and he has very little.

Try lowering the seat.