Things to do:

Windscreen leaks
Heater
Gearbox (Rebuilding S2 suffix E)
Diffs
Replace voltmeter
Fix horn button
Move and rewire horn
Change speedo cable
Waterproof headlight relays/fuses

Things to do... one day:

Inertia reel seatbelt (passenger side)
Stereo
Electronic ignition
ACR 9:1 Head? (Late 7:1 with worn guides/seals fitted)
Halogen headlights
Fog lights?