I had one of these a few years ago (before Cossie then Mondeo)

Here's the mods I did:

K&N 57i kit
Kent Cam Kit (they do a specific EFI kit)
Head skimmed (65 thou!!!!)
4-branch
Piper exhaust
Power Boost valve ( still have it somewhere)
removed viscous fan

Best suspension mod was fitting a Cossie r a/r/b meant welding mounts on but it handled well along with Cossie f/a/r/b spax, bushes etc.

Great car, not the fastest thing but did take some abuse and on the track too and never gave up.
One of my fav cars