Re: BOB or GHB
I'm an advid jeeper, keep GHB in each jeep, plus a full size spare, tool kit (all hand tools), spare fluids and parts. As for spare parts I usually carry stuff like axle shafts and spare yokes but in an lifted jeep the parts under the most stress really change compared to a normal vehicles and I encourage you to look up what you should carry for your vehicle, I even carry different parts between my two jeeps.
I almost always leave my BOB at home, its a plastic water resistant chest that I filled with mostly camping gear since its primarly used for camping but also could be used for survival as I have supplies included and plenty of gear. It's small and light enough that one person can carry it and fit it in the jeep and has a large sack inside it just in case I ever need to go portable and put it on my back.