Here are the test results.
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It appears they didn't extract the most from the Viper, especially under braking. Only 0.94g? That's hardly better than the Evo's 0.90g in this test. Recall the braking ratings from MT's figure-8 test:
SRT-10: 1.14g
Evo: 0.87g
Considering it stopped from 70 mph in about the same distance as the GT3 and Noble, the SRT-10 should have been pulling at least over 1.05g in braking. Even the Lotus which took 4 feet longer ended up pulling 1.00g on the track.
The SRT-10 pulls just as many g's in the corners as the GT3, yet its maximum speed reached anywhere on the track is 1 mph slower? The 360CS's max speed is up by 3 mph over the SRT-10? Hmm...
Then again this track is pretty twisty, so might not play well at all to the Viper's gearing. They noted:
"With gearing that seems to be designed for intergalactic travel, you just stick the manly

p) shift lever in third and leave it there, relying on 525 pound-feet of torque to render your right hand redundant. Which actually helps, because when you are on it, the Viper needs both hands on the wheel."
They noted that both the Viper and 360CS were tricky handlers. In the introductory pages, they stated they weren't out to find winners and losers. Near the end they said:
"The more expensive cars can be worth the money too, even if they were not necessarily the quickest at Barber, which doesn't have the long straights and fast corners they need to stretch their legs."
Which sorta makes sense. Recall that in Automobile's test of the Z06 and SRT-10, the SRT-10 was clearly quicker in a straight line, stopped a bit better from 70, pulled more lateral g's than the Z06 on the skidpad, and carried more speed through most of the turns at Gingerman, where they compared the two cars. But in the end, the Z06 was 2 tenths of a second quicker on the track. At Thunderhill or the big track at Willow Springs, things may turn out differently (and they have, in the case of Willow Springs and edmunds.com's test of the Z06 and SRT-10).