ATI Input Shaft. 4340, or 300M?
I purchased an ATI input shaft #355259. According to the catalog it is a shaft made of 300M, with THM 350 splines, and is pressed I to a stock forward drum. Upon receipt of it, I noticed that the label states that it is a THM350 splined input shaft, pressed into an OEM drum, and made from 4340 steel. As you might imagine, I called to inquire. I called ATI, and was told by a sort of pompous tech person that it was a misprint. I now have very little trust that it is in fact 300M. What to do?