not sure about JDM specs but for the Infiniti G in America (where i'm from) the V35 breaks down as follows:
2003-2004: Old Interior/gauges, Reflector Headlamps, Old Tail lights, Brembo brakes + 18" wheels on 6MT&Sport model
2005: New Interior/gauges, 19" forged wheels on 6MT&Sport models, no Brembos, Reflector headlamps from 03-04, Old taillights from 03-04
2006-2007: New Interior/gauges from 05, 19" forged wheels on 6MT&Sport models from 05, no Brembos from 05, Projector Headlamps, New taillights with external trunk release button
and for the 2007-2008 models:
2007 Sedan: Became new G35 sedan (equivalent to JDM V36 4dr 350GT)
2008 Coupe: Became G37coupe (equivalent to JDM V36 coupe 370GT)
hope this helps