1978 lincoln continental vin decode?

I need someone to decode the vin on my lincoln for me. It is in nevada right now while i'm in california and i want to know if the rear end has a posi in it. I know its a ford 9 inch but i can't check the rear from being so far away right now. I also would like to know if anyone can tell me the spline count on the axles. Here is the the vin number 8y89a8a66693
8y89a8a66693

The vin won't tell you everything you know. You need the axle number that is stamped on the tag.