honestly you've got bigger fish to fry first. A stroker kit is like the last thing you would do to these cars. upgraded turbos, headwork, fuel system, drivetrain, and if you get that far and you're still wanting more, THEN consider it. But the reason they are so expensive, aside from what I mentioned earlier, is that hardly anyone has purchased them, so you're paying more of the R&D than you would for a more commonly purchased item