Underbed gas tank

[hotrodharley]

i know this has been discussed to death but here we go..i want a spefic answer and pics;;i have a 64 chevy truck[long bed]fleetside;;need to move tank to rear under bed..truck already painted and new wood already installed and bed mounted..i only want to know if there is any gas tanks that i can mount under bed that doesn't hang down very low[trk has drop kit]and i can come out behind lincence plate[rool pan]..do not want fill inside bed splashing gas on my new nice wood and paint job has flake and pearl in it so not able to match so don't want fill on bed side..ONLY BEHIND PLATE[if it can be done...don't care for how many gallons it holds[don]t need to drive any long ways to need big fuel supply]..low budget so no custom built or expensive alumium tanks please..need pics please