I just had my 289 K motor built at BASKO ENGINE SERVICE in Gilbert, AZ
After repeated valve lash problems due to them reinstalling the used rocker stud nuts I test drove the car and lost an oil galley plug ( fell out).
Cooked the motor.
This kind of sloppy work needs to be advertised. BASKO said they would
"fix it" but I wouldn't let them touch another of my motors if it were free.
They came highly recomended but this is just poor attention to detail.