There is a letter prefix or suffix on Honda trannys
which determines what will fit a certain engine.
As an example......
If an "E" tranny mated up with your engine, you will
need another "E" tranny to go back in.
It doesn't matter if you pulled an "F" tranny from an
engine that is identical to your engine..........
It doesn't matter if you pulled the "F" tranny from
a car that was identical to your car.............
that "F" won't fit where the "E" was, no matter
what you do.......by any means I have ever tried.
So....check to be sure the stickers/prefixes/suffixes
are the same on both trannys.-Bob