Andy, they only have the one SKU (650705 00 01) that is listed as being for Laverda 1000 Jota / 1200 Jota (whatever that is), nothing about year. I have a '78 Jota (probably a Jotaised 3cl), deffo series 1, that has both upright and angled shock mounts. I can't get the link to the installation instructions to work from the US Hepco & Becker distributor site so I don't know what sort of mounting installation is being used, but I'm sure it uses the grab bar mount, rear footpeg mount and a top shock mount. The installation instructions are available in German from the H&B site, but there's not much there that's at all specific, mostly a list of bits and pieces.
But between '78 Jota, '78 Mirage, and '81 Jota there seem to be only minor differences. We should both have both top shock mounts, while the '81 Jota looks like it's only got the forward mount. So we're probably going to attach to the forward shock mount. Grab bar mounts look the same for all 3 bikes. We both have tubular steel triangles for the rear footpeg mounts, the '81 Jotas seem to mostly have RGS-like alloy plates. Hopefully the same length to the rear foorpeg.
The German business day is over but I'll email their sales manager about just what he is supplying to me. He had emailed me that they have at least one in stock but need to make up a few brackets. I'm pretty sure that they're using a generic rack and supplying custom mounting brackets. I had to place the order through their US distributor, I called them today, they're working from home and the guy I talked to agreed he'd never heard of Laverda and that they ceased to exist quite some time before he was born. So we didn't have a meaningful exchange of information, although he confirmed they had ordered one rack set from Germany.
I wonder if the Germans are actually manufacturing anything?
Ken