[DW31S]

Try ordering the three-core pads instead. I think Year-One does have them, too. Also, if they can't help, something tells me Fusick (the Olds parts guy) has them for a three core. I bought a set for a three core and they fit perfect in an aftermarket aluminum racing readiator in one of my Oldsmobiles. I guess the parts houses order "generic bulk" and assume they fit everything, then its $20.00 and not worth the hassle for the customer to call, complain, and go through the effort of returning them. I'm sure you are not the only person to have brand new "wrong" ones in your private inventory!