Hi RC13
The B45D hasn't been officially launched yet I think it's pretty much the B50 chassis with new cab etc and brushless gearmotors.
I live in the far north of Scotland so am a bit of a loan Wolf when it comes to Rc plant at the moment, but I hope to entice a few friends this year. So far have a magom excavator, the dumper on order and looking to have a Fumotec dozer by the end of the year, work and wife permitting