Thanks guys - some nice / useful comments there......
I agree about the Syncros, but am not sure about Syncros in general. Of course I love it, but there's a lot of Syncros about and I'd prefer something different. Crud's Answer Atac stem in blue would be great (if it's not sold), and then something to match for a seatpost.
Although I've considered keeping the seatpost and getting a 1 1/8" Syncros stem http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=280190836435
with a shim (as the post is a modern as well - came from a GT i-Drive or something).
SJS seem to do shims http://www.sjscycles.co.uk/product-Thor ... 2mm-insert
)-quill-stem-to-1-1-8inch-or-1-1-4inch-threaded-forks-444.htm but they say it's not suitable for matching 1 1/4" forks to a 1 1/8" stem. Surely just opening up the shim a bit would make it all work? The shim thickness would be right (1/16"), just the shim itself would need to be stretched?
As for Pace - yep, would love it - went for a quick win with boy"O"boy's Rockshox, as they were 1 1/4" and ready to go. Manitou916 was selling a pair of RC30's with a 1 1/4" steerer, on the bay, for about £100 iirc - don't think they sold though, but a bit out of my price range at the moment, as I'm building the Klein as well!