Yes, indeed. Depends on where in the world you are. But with so many "used Japan import engines" sent all over the world, some care may be taken with identifying parts.

H72 is a common A14 cylinder head, it was originally a B210 part number but also fitted to some B310 cars. H89 is a B310 part number, and the H89 head was used in both A14 and A15 engines. For more information on what the "Hxx" type codes mean, see Nissan 'Applied Model' codes


Perhaps the most important thing for newbies to realize is that A15 parts (except for the crank/pistons) are not necessarily any "bigger" than A14 parts. A15 and A14 are nearly identical, the most important difference is the A15 has 7% more displacement, hence more performance all else being equal. It can also rev as high an as A14, albeit with slightly more wear at high revs due to the longer stroke.