Steve, you need to be able to track and order the raw forging(s) and then the machined part separately. Like the older forged cranks, they had one forging for the small block cranks and multiple part numbers for the finished cranks of different strokes. Same for the R3 blocks, multiple part numbers depending on how they are machined. The bean counters will want to track the forgings and finished parts separately. More than likely the forging house won't do the final machining. If they used the same number for both, chances are pretty good you could order a finished rod and end up with a raw forging. Everything would end up in the same parts bin. Not too good for customer service.