Yes Paul. I believe they do
I spoke to one suplier at Stoneleigh last year, all they needed was the distance from the gearbox tail stock & diff flange, size of diff flange, input spline count & desired power rating.
The new prop is made from all new components .... Bailey Morris, I think it was
I would have a crack at my own .... Just don't want to use that stupid donut, besides it's not in the finest of condition .... Probably kiss goodbye to a fair few quid buying a new donut !!??