I own a 90 accord as well as a 93 integra. I bought the accord with the knowledge that a newer engine had been put in. Upon further inspection I noticed 'f20a' stamped into the engine block of the accord. I have a family member with the same year accod and his motor is an f22. What is the difference between the two motors. Should i swap for an h22. How much money might I be looking at as I am a somewhat poor college student. I could do some fab work myself, if needed. Thanks.