most of the performance mods were done by the previous owner of the car, who used to be in SDU also, so i think u'll have to ask him, he's kennydead on SDU forums
i think he told me he scored those tomei cams for free, coz he has a mate in japan who works around tracks or sumthing, and when the japanese go race or drift the cars, and sumthing even remotely 'out of tune' they'll throw sum of the near new parts away, these tomeis had only been used for a few laps so i'm told, and they threw it out, so his mate asked him if he wanted it, suits the RB25DE lol,
dyno, i think it made 110rwkw last time dynoed, not sure if that was with all the mods currently on it, but yeah, very smooth driving at the moment.
he's also currently doing a project car, r32 gts25 also , turbo'd it with garret t04E ( i think), steel compressor wheel, running standard 10:1 CR, very responsive, very quick, he says with a good tuner the CR can be kepts high