I'm not defending honda or a g35 in any sort, but I do believe a stock Si can run a 14.5-14.6 in a quarter(depending on the driver,weather,temperature and etc.). My friend with a bone stock Si sedan ran a 14.6 which was pretty impressive. Also, I've seen a 2007 350Z 6 speed coupe run a low 13's (13.2 to be exact) with just DR....
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06 Evo 9 MR w/ TBE: 12.89@107 mph
Bone stock 06 Evo 9 MR: 13.37@102 mph
06 Civic Si coupe with I/H/E/CTSC(4 psi)/Reflash: 13.50@103 mph
Bone stock 06 Civic Si coupe: 14.49@95.5mph