I somehow ended up with a full set of MB-Tex seats today at bargain basement price courtesy of Nathan's excellent eye in the Quokka. They are without the elusive intact fragile trim pieces, but you can't have everything and if they were with the kit, I would have passed them on to Mr. Bateman himself.
Really, these are awesome, MB-Tex is very practical and it all fits with the stealthy 280SEL look I'm after!

Below: Interior with old seats... yes the driver's seat has a huge chunk missing from the backrest!

Below: Rear minus seat because of the requirement of access to the rear strut mounts.

Below: Pics of the cleaned wheel arches and the LH Front sphere location. It's not perfect, but I'm satisfied... Alright, I'll probably clean it a few more times.
Under Wheel Arch - 1Under Wheel Arch - 2Under Wheel Arch - 3LHF Sphere location...Tim