323 ti? where are you?
The 323 is really a 2.5L i6 but was rebadged for some reason and has the same power as the 325. In a sraight line I would have to say the 300 due to the upgrades, but the auto helps even it out. The best way to find out is to race.
<span style='color:gray'><span style='font-family:Courier'>1995 e36 3 Series RIP
1999 e46 3 Series BURN IN HELL
2000 MR-S Roadster= Current</span></span>