Yes, Myself and others have been working on locating the Japanese crash sites for years.
I have searched the jungles of Oahu many times for reported locations of Japanese aircraft.
The best reference that I can give you is this
Pearl Harbor Japanese Aircraft Crash Sites, Records, & Artifacts: Part 1 thru 7
by James Lansdale
at this link:
http://www.j-aircraft.com/research/jimlansdale/ph_crashsite/ph_crash_1.htmlanother reference web site is this:PEARL HARBOR ATTACKED, Japanese Aviation ยป Historical facts and commentary
http://www.pearlharborattacked.com/cgi-bin/IKONBOARDNEW312a/ikonboard.cgi?act=SF;f=11David Aiken, Shinjuwan Sakusen Sensei, Director: Pearl Harbor History Associates, Inc. has been working on accounting for all the planes for years, but getting him to tell everybody else is another matter.
Known sites are now buried under a house, another buried in a golf course, another buried in a gulch.
We have photos, documents, first hand accounts. getting permission to dig is another mater.
Of the 29 Japanese planes shot down, only about half are exactly known crash sites.
Many crashed into the ocean and were lost. Only the Niihau Island wreck survives in the Pacific Aviation Museum along with a few fragments of some of the others.
for the record:
Japanese aviation losses:
Five Kaga KATEs (all first wave torpedo): all by AA fire
Nine fighters: Five by AA fire, one each by Harry Brown and Malcolm Moore; two unknown.
Fifteen VALs: Shokaku VAL first wave: got lost/crashed in ocean. Second Wave VALs: seven were hit by AA fire, the rest by Daines, Welch, Taylor, Brown.
Aloha
DaveT