Quote:
Originally Posted by cdeslandes
. . .can't use 378 hp in the snow!. . .
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Sure you could if you're driving +120 mph in the snow!
Show some guts, soldier! 
Just for conversation sake, the number you really concern yourself with on the street is an even bigger number and that is 421 lb-ft of Dinan tuned torque. That's tractor pulling power that comes on at about 1300 RPM, and feels like cutting butter with a hot knife all the way to 100 mph!
Horsepower will help you spin those wheels very fast, but for normal Joe's like us, it helps you attain a high speed. You only need 15 to 20 horsepower to drive around town. But over 120 mph, air pressure pushing down on your car, plus air friction, requires a geometric increase in horsepower to achieve 150 mph.
I agree with Ducky - you need it!