Have a look out on ebay for a Raleigh UGLI fork, came with the UK version of the Ti bike (called a Torus over here) when new. The other fork that came with it was the X-lite Rex Trimnel fork - a dual crown Ti fork with intergrated stems, an absolute beauty!
Other than that the Pace range are always worth a look (RC30/31), or some custom made ones from any decent frame builder (Independant, Vicious etc).
Just have to be careful of the length as the new Salsa is modern suspension length and may put the front end of the frame in the air too much