oil pump

We cannot find a PN for the 92-97 SC400 oil pump. Digging into the original PN (15100-50050) mentioned here, that is also not for the LS400 or SC400. Lexus' parts site doesn't have a part no. and I can't find a cross reference for a 1uz-fe non-vvt oil pump. Edit: According to @gloverman link...