I would be interested to see that timeslip. It makes me wonder when a new 350z runs a 13.9-14.0 stock with 287hp and TQ in the same ball park, and a stock ITR runs the same time. The weight diffrence isnt enough to make up for that. Your friend may have run that time, but I question if it was stock, gutted......
I am impressed if you ran a 14.7 in your ITR stock. You must be a good driver. It is what the car is suppose to run. I have seen modified Type-Rs run in the 15s. Perhaps I have just been to a crappy track too many times, where do you race at? What are the details of your run?