Kyosho LAW34 suspension kit

[beast95451]

So the spare (3 hole) rear arm won't work on my ZX-5, but will work on my RB-5? My RB-5 has the black shafts & ZX-5 rear hubs. Next question, Can I just use the silver shafts on my ZX-5, & run the 3 hole rear arms? That way both buggies have the same rear arms, or do I need other parts? Sorry so many questions.