I'm having trouble learning what the exact differences between e36 M3 coupes and sedans. (I am well aware that the sedan has 2 extra doors ) Can anyone help? Most importantly- suspension component differences (sway bar thicknesses, spring rates, and so on)? Also- interior dimensions? Seating position differences? I'm not trying to get into the ethical side of things here... I realize that a great way to look at things is: "if you want 4 doors, get an m5." However, there are more low-mileage sedans out there than there are coupes, it seems, which may put the sedan buyer at an advantage. Thanks for the help.