[ford38v8]

In addition to the excellent points made above, much of what is called NOS today had actually been rejected initially as unusable or would have required rework to use it, therefore rejected at the factory. Other "NOS" parts have proven to be used, traded into the boxes of new parts, found in dark corners of dealerships gone out of business. There is almost always a reason why a so-called NOS part has not been snapped up and put into service for all these years. Examine those parts carefully to know exactly what you're buying.