they are compatible will rhd and lhd as far as i'm aware
there are a couple of different different types of xbrace though the newer type makes it easier to service the car (ie can get to the drain plug without removing it)
whereas older ones i've seen had a sort of plate at the centre of the cross section so needs to be removed to remove the sump plug!
also have a check under your car and see if you have threads in the required holes! otherwise you'll have to use rivnuts like i did!
and for ref this is the newer type