If oyu are talking about internals then you can use the entire short block from the F22A sohc motor.However this is not a straight forward build. There is a considerable amount of machine work necassary or the H22A head to mate properly.There is an article about this on www.honda-tech.com that was posted a few years ago so search the archives.Now if oyu are talking about accesories such as the a/c or alternator Im not entirely sure. Since I dont know the AMP rating of the alternator and bolt configuration of the A/C pump.