Kazuyoshi Hoshino
The field was almost unchanged from the previous race, but Noritake Takahara rented the second Surtees replacing Brett Lunger and Masami Kuwashima replaced Warwick Brown in the second Wolf-Williams. However, Kuwashima was himself replaced by Hans Binder during the meeting, after his money failed to materialize. Maki resurrected its Formula One car for Tony Trimmer while Heros Racing entered an old Tyrrell for Kazuyoshi Hoshino. Kojima Engineering entered a locally built chassis for Masahiro Hasemi (on Dunlop tyres).