CaptBlownMotors here: Having gone through every type of motor you can put in a road race car (Factory, Custom shop built, Ford Performance) and had lots of trouble over the years, I thought it would be a good exercise to walk through blueprinting and properly building up a motor for road racing. After blowing up a motor spectacularly in early 2018 (and still inexplicably - to me at least), I bought a used 2011 motor from @steveespo to keep me racing through the season. That turned out to be the right call as the car made every single race after that without issue! It wasn't quite as powerful as the motor replaced, but the reliability paid off big in the end. Now that the dust has settled, I'm building a motor to meet the Super Touring 2 classing limits and bring the car a bit closer to the competition (which is faster mustangs, a GTR, corvettes, oh my). I've partnered with a local shop to do the work (operated by someone who has built for almost every racing series that needs gasoline engines to compete). Their experience and attention to detail had sold me, as I had used them to measure out all my old equipment from the aluminator I had broken in February. After cleaning up and going through the parts, we made the determination that only two parts could be used from the old engine for anything new: the Manley H beam rods (after cleanup work, they're not perfectly round even when brand new), and the oil-squirter blockoff plates. Given that, I turned to my sources for Ford Service and Ford Performance Parts and ordered the following: Some of this stuff ended up being unused like the head bolts (replaced by the head stud kit as we needed to install, then reinstall heads or cylinder torque plates a few times for blueprinting and machining operations). Same with oil pan bolts, main bolts from the hardware kit (and the bolts that come with the block, etc). More to come.