man, no competition, the 300zx will be faster...but there's a major comprimise....u will be driving around in a outdated 80's lookin shit heap. ok, maybe thats a bit harsh, i dont know wat they are like to drive, but imo they look ghhhheeeey.
go for the r32 and be apart of the skyline family.
everyone knows deep down the r32 is the greatest skyline of them all. if u can score a GTR, then even better.