The R34 was modified by MCR (Matchless Crowd Racing), which means it’s had tens of thousands of dollars invested in it. MCR, last time I checked, ONLY modifies R34s. They know what they’re doing.
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Apparently, all of the Skylines on that track (with the obvious exception of the R35) were modified by well-known tuning houses that specialize in Skylines.
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Even so, the difference in lap times was down to the tenths and hundredths of seconds.

Evan, I think the GT-R (R35) is bone-stock, because no one has really figured out how to modify the R35 (yet). Clearly, the other three GT-Rs are heavily modified. In this case, I am quite impressed with the R35′s response.
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I would also like to know how much was invested in the other three cars.

That was good but, I was saddened by the new ones response. I guess the question is how much $$$$ is invested in the first 2 cars???