Hi Craig, You have a really great repertoire of literature. So FT22/1 was very short lived, and FT22/2 Rear Mudguard Stay was what would have been on my April 1948 Rapide. Still seeking dimensions (length and C2C of bolt holes) of said Mudguard Stays from a Series B Vincent of similar vintage, i.e. with the shorter 17.1/2 inch RFM.