Yeah, I can snap some photos of my US released ones, but Buster & Hydra are a lot harder. They're the same as the US ones, just red in the place of some of the pale green is all.
the Masterforce versions http://tfu.info/1988/Destron/Hydra/hydra.htm http://tfu.info/1988/Destron/Buster/buster.htm
And knowing is half the battle! It's late here, but if nobody else posts them, I'll do a comparison with mine tomorrow. They're a little larger in robot mode than the Ginrai cab robot is in robot mode, though, to give you an idea of size.