Quote:
Originally posted by 911teo
and how many seconds a lap is it worth?
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That depends on the rest of the car. In my opinion, it fits into the 'money is no object' category of upgrades, sort of like a G50 transaxle with custom gears. The 993 rear end is not good value, in terms of bang for buck. But if the object is to build a winning race car, at any cost, it's a no-brainer.