The answer is: Maybe. When you talk about a 900 Ford, you're talking about the series. Within that series are several models. One of those models is the 960. That's the one that has the two stage clutch and live pto. Not the 950. Same applies to other Ford series of the same time period. 860 has live pto, other 800 models (840, 850, etc) do not.
Here's a site to help ID which model you're lookign at.