Hey Folks, well I need to change the fuel filter, I'm not sure if it's ever been changed but I do know that I've had the car for 6 years and close to 100,000 miles and I've never changed it. It's a 2006 300c 5.7 V8 and that thing under the rear drivers side seat that is apparently the door to the gas tank and fuel filter, that thing is stuck big time. Or maybe there is a certain trick to getting that thing open. I have the service manual and there is nothing in the entire 7000+ pages about how to get that door thing open. I've tried everything short of jackhammering it. Please don't tell me to watch that one video on youtube because that is a 2015 and it's totally different. If one of you knows the secret to getting to the tank and filter through that weird looking thing please respond asap. And I say asap because the cylinders are misfiring and massive white smoke pouring out the tail pipes. I've done everything else except fuel filter, pump and regulator so it's gotta be that. Thank you and have a wonderful day.