Looking over my recent purchase, I just realized I may have missed something. There is a big empty spot in the engine compartment on the passenger side fender by the firewall. I even have some unused plugs. Please tell me this isn't something I need to buy that is emissions related. I have noticed on some pictures that some people install a battery here but I just want to make sure these plugs weren't supposed to be used for something. 2000 uzj100 if it matters.
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