Not sure if they have a presence in Manila (as I believe they are, in fact, located up by Clark like you said), but if you can't find what you are looking for in/around Manila, I've had three or four custom models (mil and civ) as well as a couple of plaques made for me and shipped back to the States by these folks and have been very pleased with all of them FWIW. The used to have a small trailer outside the mil hangar at Clark- may still be there, but most of mine I ordered online or via email anyway.
http://www.asianimports.ph