Spec V vs. 3000GT SL

I saw someone say they ran 15.1 stock in their Spec-V, and the SL i've seen between 14.9 and 15.1 (manual only). What do you guys think?

Also, so I don't have to do my own research, is the Spec-V turbocharged? I'm guessing no from the times it puts up? Let me know please and thank you!