The plate ensures that any air entering just above the bumper goes through the radiator, not out of the bottom of the valence. It can be fitted with the engine in situ, but I recommend making up a cardboard template first.
You can convert your engine to a spin on-off oil filter by using the Ford Nipple in the block, Part Number DIAZ - 6890 - A and the Fram Filter PH2874.
This is a very neat installation and allows you to now mount your coil where the old oil filter was. Note that, with this being a smaller filter you should change your oil more regularly.
For missing or very badly damaged
radiator-owners, new end tanks and brackets are usually available from the California
Association of Tiger Owners (C.A.T.) in America.
Once bolts, nuts and other non-precision items are free of all rust, heat them over a charcoal fire then toss them into a pan of motor-oil to produce a baked-on protective finish (the part takes on a dark, rust-resistant finish). Watch out for flames and fumes from the oil though.
When this tip was published in Cats Whiskers Issue 47, a free Tiger T-shirt was offered as a memento to the first member trying this with a complete car. As far as we know, the offer still stands!