FWIW, 11-5/8" is ~296mm, and you'll have better luck looking for a 296mm rotor since the car is measured in metric every where else.
There are a handful of Nissan rotors in the 296mm range, Q45's ~2000 model year, R33 Skyline GTS-T, R32 GTR (non-brembo?) and probably some others. As far as rotors that are drilled for 4x114.3 and 296mm OD (with the correct hat dimensions) you might need to have the drilled at a machine shop.
Personally, I'd buy some 5-lug 296mm OD rotors and have them drilled. Or just upgrade to 5-lug. Lol.
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