My wife keeps telling me that I need a new truck beacuse mine is so dirty inside. Probably from running with the windows down all the time on dirt roads, the headliner is really dirty and somehow it has gotten mud on it too. I have asked the people at Ziebart about cleaning the liner like you would carpet, but they said they would be afraid to touch it for fear that they would make it look worse. I have tried cleaning, well vacume cleaning with hose and brush, but I wonder if anyone has cleaned theirs with say like a Hoover wet vac with the hose attatchment. I would rather clean it than have to replace it all together. If though I did want to replace it, how much would one cost and how difficult do you figure it would be to install? I would be concerned about it rattling even moreso that the stock liner. Mine rattles when the sun roof shade is closed, so I usually keep it open for that reason...