One of the heat shields on this carrier was okay but the other was knackered, plus 70 years of rust behind both just could not be left here, so they were both removed prior to the visit to the sandblasters.
During the week I found some correct thickness cement fibre sheet (a lot more socially acceptable than asbestos sheeting, but not certain the heat resistance will be anywhere near as good!). These were cut to the correct size and then a visit to my tame sheet metal fabricator to bend up both heat shields using one of the originals as a pattern.
Today managed to get down the shed for an hour and so cut out the recesses to go around the muffler bolt pads. I find it strange that these are both the same and not a mirror image of each other. I could not find a reference in any on the manuals, but regardless, these are what came off the carrier, so they are what goes back on.