Some go fast in their GT just because its still fun. Hell when I had mine, another local GT always battled it out. Then he took a total different route and went cam. At first he still couldnt touch me since it was a GT2 and the car couldnt breathe. I was still sitting pretty in 14s. Then he got headers and ran a 14.3, which blew past me.
Still good times to be had. If your gonna do heads, get a GT2 cam, higher stall and 3:69 gears. That has 13 second NA combo written all over it.