Was in the exact same boat a month ago. R32 GTR, RDA slotted rotors all round HC+ pads all round, squeeled like a pig, found out that the brake guy didn't install any antisqueel shims, the kit is $90 from nissan, comes with all grease and shims, brakes are quiet as a mouse now, just did my 3rd track day on these pads, starting to wear thin now but still stop well, about 30% left