Julian,
After the first pair of drive shafts I ordered were the wrong size (ie I specified the 105mm type Lobro CVJ's and they were machined for the 95mm)I decided to go forget the so called professionals and go the DIY route. I recall I used EN24 steel, machined to O/D and a local gear cutter (Iver Gears, Iver, Buckinghamshire)cut the splines to suit the larger lobro's. All that's then needed is a suitable lathe to put the circlip groove in. I also recall I never got the money back for the first pair. As far as the Lobro CVJ's are concerned, what size is your gearbox and hubs suited for? I went the 105mm route because Trevor Taylor had broken a few of the 95mm joints in his car but the 105mm seemed to be satisfactory.
Dave M
Still in Verona
Still +41c every day.