I Need help with my 91 accord

Let me start off like this, I have a 91 accord and I switched my automatic to stick but there is a 94 accord tranny in it now. I just bought a h23 motor but it is automatic, I just wanted to know if it will bolt up to my 94 accord tranny with out any problems?

I heard that the tranny h series and f series are similar. How true is that.