Defender 90 Rear Speakers

Hi All

I have found a post in the news group that says that you can get some
enclosures for rear speakers that fit over the rear light pods. Parts
AWR4650 and AWR4651. Has anyone seen/used these. Do you know what size
speakers will fit into them? Can anyone supply these?

Does anyone know of any other solution that does not involve makeing
something?

Thanks
Phil