At first I thought the shape of the '07 sport seat was good for my back, but after a long drive up to the Silver State Challenge in Ely Nevada (550 mile day), my back hurts. Worse, now when I even think about driving my C6, my back twinges again. I asked a local upholstery shop if they could take it apart and stick some extra foam in there, but they suggested sheepskins instead. My wife's '05 Mustang is soooo much more comfortable. Any ideas out there? Am I the only one who thinks the seat sucks? It isn't because I am too big either, I am 6 ft, 175 lbs. I have s sheep on order, so I will see if that helps.