The street motor is all stock and no issues, the great thing with turbos, is when not under boost it's just a stock running engine with no extra forces against it, the perfect street setup.
If you get Rodders Journal issue number 60 the car is on the cover with a complete wright up on the car.
I don't know anything on the internal parts of a Packard but I'm sure you can get anything you need with a little searching.
