When we brought you all the details on Hennessey’s R35 GT-R performance package, some pretty impressive performance figures were being bandied about.

Not one to make a claim without backing it up however, John Hennessey and his team have just released two videos showing the R35 doing what it does best: going very fast.

Follow the jump to check out the mouth-watering action.

In the first video, John runs the R35 down the quarter with times posted at the end of the clip, then has some fun on the return trip. Note that Launch Control is not engaged.

Here we see John demonstrating the GT-R’s 0-300km/h time - just another day at the office, huh?

Pay close attention to the G-meter in the corner of the videos during some of John’s work, and then imagine what it must be like to do this for a living.

GALLERY » HPE-R35