actually they all work (i.e.,b16a2 distributor on my 93hb, or the 00 si coil on my old rex etc, non-obd coil in deboes 93 prelude...etc, etc...)...coil does not matter as long as it is working, but the icm chips are slightly different...course I have swapped those out as well, gen. just pertains to the way the bolts hold the chips in place...if you need one, I have a bunch