Looking back at this ancient thread, I have an 85 D-150 that came from the factory with a slant and a 727. The 727 which everyone else I talk to wants me to throw out in place of a 904 I ain't so sure I'm sold on that idea..... Me +904s don't seem to get along so well. I definitely like "different".
And I even have a good rebuild able 904 core sitting here now.... But not so sure I want to demote my truck like that.