Good god - It's not all about power. and sports cars are not all about going in a straight line. Balance - braking/acceleration/cornering ability. You need to go an drive a formula ford - or a 125 shifter kart. I'd be interested to see how underpowered you think those are!
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"If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough horsepower"
-Mark Donohue