you're right, they have a/c, heat, and a 6 disc changer like me....
my seats are the only thing i remove on race day anymore, everything else was expendable weight that doesn't affect the comfort or driveability of the car, i'm always 8 bolts and 10 minutes away from having full interior....i haven't put it all back in yet because of the 8.0 race at MND next month, but after that i'll button it back up until race season rolls back around