Have purchased 4 6.0 engines from this place since September. All have failed in one way or another. One engine developed a cracked cylinder head within 20k miles. After two months S&W warrantied the cylinder heads did not warranty any of the labor or supply any of the gaskets. Second engine that was purchased the HPOP failed within 20k miles. S&W warrantied the HPOP but had to wait for them to send mine back and get one shipped back. In all about three weeks. S&w did not warranty any of the labor on the HPOP. The third engine dropped a valve and damaged some pistons. S&w sent us to another shop Powerstroke Specialties nothing was warrantied and ended up with a $8500 bill for another one of his motors and a friendly install. We've learned our lesson stay away from WILSON. read more