has nothing to do with Taiwan. Don't think my factory ordered early 65 ("64 1/2") had em. Seems like they were added on the 67. Have no proof/evidence of when they were added but was an engineering/design.
My '64 1/2 vert. Ordered May '64. D code 4 speed, handling package, caspian blue, accent group, Ford blue manual top.
'68 vert. driver. Owned since '77. C code AT, AC, PS, P disc B, PT lime gold, standard black interior and top. NOS RF fender and left quarter.New top and folding glass.