So, in the end I decided to buy the one I liked from ebay for an LHD car and DIY modify it to fit my RHD E39. Here's a quick how to [moderators, feel free to put this in the DIY section]. I'm pretty happy with the results: 1) This is what I bought (cost about NZ$25 incl shipping): 2) I cut the sides off with a fine tooth hacksaw and glued the pieces back together to fit the space for a right hand drive car. Then filled any gaps, etc with some plastic putty (bought some cheap sandable filler