the nissan cefiro had just gotten a facelift, so it should be i guess about 2and a half year for the new modle to come out. it is very come because i drove one,(i live in australia and i always drive on highway which = used alot)
not sure about the power bit because the australia Cerfiro in Australia is 3.5 only. but very intrestingly i have beaten a r32 skyline on the trafic light with the Cerfiro 3.5