I'm glad you and the engine builder got everything taken care of. Sometimes things just happen, parts break, it's all part of racing or hot rodding. Could have been no one's fault. Good to hear you'll be back out on the track soon. There's nothing wrong with a 600HP 383 engine. We build em everyday for dirt track applications, where guys are turning 8000 rpms for 50 laps per night, all year long. It all has to do with the quality of parts, this is where alot of guys encounter problems, more horsepower/rpms equal more money. Many will try to cut costs by using parts, pieces that are not suitable or engineered for what the person is trying to do.