if you keep the same transmission you do not have to change axles.
H/F series are very interchangeable. I don't remember whats in the 90 accords. if its not an F you will be needing more things than what i list
Basically, complete longblock,ecu, and jumper harness or to rewire it to the engine OBD, which will either be OBD1 or OBD2. Double check some write ups to your chassis code to find out all the odds and ends.