Torn between two beasts.

Karnak

Isn't it the other way around?

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An excellent case in point is the relationship between a vehicle's curb weight and its power and torque outputs. The oft-referenced power-to-weight ratio has always made more sense to me when expressed as weight-to-power, where I can see exactly how many pounds each horsepower (or pound-foot of torque) is being asked to lug.

Directly from: Top performance car power-to-weight ratios under $100k, $50k and $25k - Autoblog
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As you can see in the lists on that site: the lower the number usually means the faster accelerating car, thus in this case, it appears the challenger outpulls the 370z just based on the stats you posted unless I don't understand correctly. Don't get me wrong, though, I'd take the 370z over the challenger any day......I just like refinement of the suspension more than brute force...

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2017 370z Touring Sport, 6MT, daily driver (all year) Yellow!