I've got an e36 M3 sedan, with the non-powered sport seats, and they kind of suck. Lateral support isn't very good, but more importantly they hurt my lower back after a few hours. I've looked around at what people have done for aftermarket seats, and it seems like most people swapping non-OEM seats go full retard with race seats, which isn't what I'm after in a DD. Any suggestions for picking something that'll be more comfortable, with maybe a little better lateral support as a bonus, but that's not the main goal at all. FWIW I'm 6', 175# or so.