I have a set of princess 4 pot calipers for sale which I believe are a straight fit onto the standard tiger hubs. I can't remember though if you have to have bigger wheels to fit them - perhaps someone can enlighten me.
Anyhoo these almost certainly need rebuilding but are complete. I was sold them by Tristan over 10 years ago but I never got around to fitting them.
Collection or viewing only from Surbiton or Datchet by prior arrangement. These are sold as seen. £100 o.n.o.
Email bencmay@googlemail.com.
Cheers
Ben