I currently brought my 00 GT in for the second time in a little over a year for engine problems. First time, I blew 2 cylinders and had a new engine installed. This time, it's only 1 cylinder that has lost compression. But, it's only been 4,000 miles since the new engine was installed, and I ran it once at the track since last spring. Other than that, its been normal driving. After a phone conversation with Joe from JD Auto here in PA, he was telling me how common it is for these motors to crush rings and this is due partly to the so called rev-limiter that they use. He said the way the factory setup works, regardless of how high you go, leans the motor out and can cause such problems. Maybe if Ford used better material in the engines, ie.. heavier duty rings and such it wouldnt happen as easily. I am interested to see how many others out there have had similar problems. If this happens again, I think I am going to just pay to have the motor re-built with high quality stuff.