the difference is manly down to RWD mate
fastest lap of a stock EP3 on the ring is 8:47
fastest lap of a stock 350Z on the ring is 8:26
both driven by Horst Von Saurma
just to put it into comparison ive seen slightly tinkered ie exhaust and intake ep3 struggle to run a sub 15 second pass on the 1/4 mile yet some 350zs have got 13.8-13.9 on a good run with similar mods