i belive it does.
there are no JDM yo setups that i am aware of. my mate put an "ARC" filter thing in his s15, but it wasnt much different to a pod filter, other than it was flat.
i always wanted to make my own airbox, out of fibreglass so it moulded to the car. then you coudl have cold air feeds from whereever you wanted as well. and paint it black...everyone likes black. i made a subwoofer box once that moulded into the rear of my old 323, so i figure its pretty much the same, cept where the subwoofer went i now put a pipe for the pod filter to attach to. or you could even make provision for a standard panel filter, just find the biggest one in supercheap auto and make it fit.
you coudl try and shoe-horn in a standard airbox from another car, i tried to use a commodore one once but didnt have much luck, just didnt fit in very well. other guys have had success with it though, i think someone put up a tech article once.
of since you have an ae86 you could track down a standard jap ae86 airbox, that *should* bolt in.