I managed to score an IMS 4.9 gallon tank for $60. The only downside is that it's missing the petcock and some other pieces. It was also beyond filthy. I've cleaned it down to being almost beige (it's supposed to be white), but I'm considering having the local bed liner shop spray the whole thing with the black bed liner material. My only concern is that the stuff won't fully adhere to the tank and bubble off over time, as standard paint does on the IMS tanks. Anyone have any suggestions?