Just having a friendly dig mate, Mr. wooders is always coming from a good place and is always looking out for jeep owners and while he does that he will always have my respect, but let's not forget he is also a business so we have a duty to challenge him on what he is presenting in a public forum
But for those looking at aux tanks you should know that in SA, NSW & QLD you are unlikely to get it certified anymore, QLD & NSW will be changing their rules to prevent aux tanks being installed. Also worth understanding that installing more fuel means you also lower you load capacity which is not much to start with in the TJ.
Either way you go, the TJ definitely needs more fuel capacity, and yes jerry cans are cheap they are also a pain in the backside to transport and fill a tank with.