This is my list of known PLAYART castings that represent Japanese vehicles.

July 2 2016 - ​ if you think I've missed something, please let me know.

PLAYART
7117 - Toyota 2000GT Convertible (1967)
7122 - Toyota 2000GT Hardtop (1967)
7137 - Datsun 240Z
7139 - Honda N360
7140 - Honda S800
7141 - Toyota Corona Mark II (1970)
7142 - Toyota Celica 1600
7143 - Toyota Crown Hardtop SL (1971)
7145 - Isuzu 117 Coupe
7146 - Toyota Corolla SL
7147 - Datsun Sunny
7148 - Mazda/Yamada Discmatic Rotary Coupe
7149 - Toyota Corolla 1400SR
7152 - Honda Z Coupe
7156 - Mitsubishi Hip Up Coupe
7205 - Mazda RX-7 
7229 - Mazda B1600 Pickup Wrecker (1972)
7249 - Mazda Cosmo AP (1976)
7251 - Mazda B1600 Pickup (1972)
7256 - Honda Accord