They are something of a gamble - the issues with the engine aren't as prevalent as the internet makes them seem, but at current values if you're unlucky you're looking at spending a healthy chunk of what you paid to fix it. Lots of people aren't willing to take that gamble. Best bet, if you can swing it, is the 996 turbos or GT models when use a different engine without the weaknesses. Or you can pays your money and take you chances.
11/26/13 at 10:53am