Well, turns out the Mach motor is more gone than we first thought. LOTS of problems from an apparent bad build. It had less than 500 miles on the rebuild and it appears that blind monkeys could have done a better job than Powered By Ford. Compression tests showed that #5 cylinder alone was down over 60%. I don't know if it was bad honing, improper ring size or both. PBF had a ton of excuses and tried blaming everything from the car being run ONCE on a dynojet to a bad tune (their tune btw). Bottom line is... they did a crap build and refused to stand behind their work. Long story short... Black's Automotive kicks ass :thumbsup: ...and I got the snake. :coolman: