Are the NTK 24554 oem or are only the densos 89465-39735 or 234-4162. These are model numbers for my vehicle and my dealership carries only the densos but some sites I've looked at say both are oem or oe and the ntk's are about $10 less for the pair. The difference in price isn't much but 10 bucks is still 10 bucks if they are both oem like they are for spark plugs.

Black 1998 T-100 4x4 ext/cab
265/70/15 on pacers and bilstein fronts