If you cannot find generic parts (body shop term LOL ) they are in yellow pages . Most all auto wreckers sell them here and ask a body shop they will give you a supplier .Hey they might get a paint job out of \you later .
Avoid LCM and the like you will find better prices . I get them local with no shipping costs .
Sounds like the one car I did also.
Over half of both where nothing but a single sheet of newspaper sprayed over with sprayable filler. Looked perfect painted couldn't tell it was filler at all.