Hi Nigel,
Thanks again for the further information. As for other problems with the installation, I haven't encountered anything too testing. The biggest headache so far has been the gearbox mount being in the wrong place. I don't know, but I think that this is because I was going from VX Classic to Zetec as opposed to the more well-trodden path of X-flow to Zetec. It was solved by making up a bracket effectively to move the gearbox mount forwards on the chassis by three inches. I then got the propshaft extended by the same amount and I'll also need to enlarge the bonnet hole a bit. Apart from that, touch wood, it's all been reasonably straightforward. Even the wiring, which I usually dread, was OK in the end ...
I get the impression from your various posts that your project hasn't been without its challenges (that could well be understatement of the year!). I hope the light at the end of the tunnel is getting brighter ...
Adam