[Lynn Eades]

Rob, I have removed a few shims from under the carrier engine mount top hat sections. They are 1/8" inch (3mm) thick and just bits of flat bar that locate under the top hat section (one each end)
These are flat bar with rounded sides and cropped ends which I would bet (my left nut) are factory made and installed and from two different British carrier hulls. One from Merriden, Western Australia, and the other from a New Zealand hull.
These two carriers would never have met except at the British factory.
If you add that three mm. under your mounts and then consider that there is probably some variation in the settled height of the currently available engine mounts, then you are probably there. (who made the mounts you have? Are they original Ford? Not likely. Do they squash the same amount as the original Ford ones?
There are various engine mounts made by Ford with different part numbers. (I haven't gone far into it) Do you have the cup washer under the mount?
Do you have the big washer on top of the mount? (under the pump mount) This washer is another 2mm. Total 5mm so far.
At the end of the day the gearbox HAS to be square with the diff extension housing for the components to align. Unless you have a buckled floor or rear hull plate then it has to work. If it isn't right then, well you need to pack those mounts to suit. Thats how I see it anyhow.