Tiggy, I found on eBay a NOS Conical front end (less hub/wheel) complete with T/R bearings.
All I had to do to fit this to my Plunger frame was have fabricated some sleeves to accommodate the Tapered Roller bearings.
After that it fitted straight in, may sit a bit higher than stock, but I'm real happy with it.
I had photos, but they've gone to the universe at this stage
. Maybe I have drawings somewhere. What frame are you planning to use?