if you're replacing a d16 with a jdm d16 of the same series, there's
nothing much different.  if otoh you're replacing with a different
series engine, you have compatibility issues to iron out, but it's all
been done before and is widely documented on the net.  jdm itself is not
an issue unless it's a motor not available here, but even then,
practically every swap combo you can imagine has been done before and
you'll fine write-ups on what to do on the net easily enough.