I think the fork upper tubes are the same between SS and SSie; I know when we put SSie forks into my old SS yokes there were no changes required.
Also, I know that Andy (Hypermoturd) on here has a load of forks parts for sale including uppers and stanchions, as well as a complete set of forks that should fit as well!
I'll give him a nudge...
I'd rather die peacefully in my sleep like my Grandfather, than screaming in terror like his passengers.- Jim Harkins