Right on: the rear body mount rods are not the same, shorter mid-shaft, price were not the same, made at different time, got different tamiya number designation.
I agree with 泉, this is TA02W, which is using TA02 lower arm, TA01 kunckle arm, TA 01 king pins and 200mm body (such as JGTC Supra, Skline GTR LM, IMSA Fairlady 300ZX).