Hello guys, I've jumped into this build late from the LEM side. I haven't kept track of the build here on FSM but for those who are still having difficulty finding 1/48 scale decals I found this set (Cutting Edge #ced48226)on E-Bay:
It has decals for 6 planes, 4 of which were supposedly flown by Boyington. This particular set is in an auction thats ending today (April 24). GreatModels also carries them but currently lists them as 'Special Order'. I ordered the set from them only because I was buying some other things. I realize it's late in the game but if ordered now they should come in in time to finish on time. Hope this helps.
P.S. here's the link to the E-Bay auction: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5970312795&rd=1&sspagename=STRK%3AMEWA%3AIT&rd=1
And Joe, if you could add me in here, that would be great: Tamiya 1/48 F4U-A1, Aires cockpit set, Cutting Edge decals. Thanks, Pete