The bottom line is NO manufacturer, engine builder or supplier intentionally installs a bad part. We play with some pretty expensive toys, I beleive this engine was in excess of $20K.
My first cobra had a run of the mill 302 with stock parts except for edlebrock manifold and heads and holley carb. That cobra and engine was beat senseless when I owned and the next , owner beat it harder. I am talking 1000's of 6Krpm shifts. I dropped the clutch 300 times? Next owner tracked the car. Last I saw it had over 15K miles and was still running great, used a little
oil from what I was told.
My next one is going to have a stock engine, I'll give up the 75hp for bullet proof reliability and if it does break, who gives a sheet I only have about $4k into it!!!!