Wanted to ask the forum for some advice with respect to racing seats. I just got a cage put in my car and I am thinking about doing some seats and harnesses. I wanted to inquire about the best racing seats. How comfortable are they? Would you want to sit in them for 30hrs straight? Also, would you recommend keeping the stock seats or trying to sell them? I don't imagine I would have much of a use for them after I get the racing seats, but I'm not sure and wanted to ask what others have done with their old seats. I figured I'd just keep them around; but honestly, has anyone ever taken their racing seats back out in favor of their original bmw seats?