All the mags are rating the Lex highter than the infiniti. Bribery does wonderful things.
The lex is faster, but slower top speed wise.
The lexus' rear end it 1 ratio lower than the infinitis, adn the gear ratios are similiar, so the Lex has to rev higher to maintain speed, by about 2-3 hundred revs at 60 mph.
Fit the Lexus rear end on the infiniti, and we are looking at perhaps 5.2 on a bad day, into the fours

on a good day, maybe??