Now this is what Passionford is all about = thanks everyone so far!

Deflex tell me they only do the Orange one pictured above - I'm not sure if they will do custom bits, but if they can make the orange one I'm sure they 'could' make the one I need if there was the demand / the money! I'll ask them.... good idea Creedy!

Found an American website selling Beemer 635i prop bushs, similar in shape / style to the Wrong bushes pictured above - seems like Tony, Ben and Neil are all on to something.

Will try BMW parts dept for a 535i 1990 and see what they come up with. Thanks Benn