I've got 'the tool' in France - in fact I have two. One is (I believe) an exact copy of the original Fiat/Lancia tool, the other is a poor copy. Most of the dimensions differ between the two. I also have spare head bolts I can butcher to make up Eric's guides (very reminiscent of Guy's gearbox mounting guides), a torque wrench, paper copies of both of Guy's books and an electronic copy of his first book. The engine had a new tensioner bearing less than 50 miles ago and I'll be bringing down a spare, new water pump (the very pump that the French garagiste fitted a few minutes before wrecking my original engine). Only had a couple of minutes use at most...
I'm sure there are plenty of other things, but that's for starters. Thanks for all the replies and help, chaps.
Is there any overriding reason why I shouldn't do the Aux drive shaft lobe removal while I'm in there? I could bring it back with me when I retrurn in a few week's time and have it circumcised and ready to re-fit when I return. It also means one less thing to worry about when re-fitting the cam belt.