Things to do:

Reseal windscreen
Gearbox (Rebuilding S2 suffix E)
Replace voltmeter
Fix horn button
Move and rewire horn
H&H electronic distributor
Halogen headlights
Waterproof headlight relays/fuses

Things to do... one day:

Inertia reel seatbelt (passenger side)
Stereo
Fog lights
Change speedo cable

Stuff to buy/fabricate for fuel injection:

Inlet manifold
Throttle body
Throttle linkage
Idle control valve
Swirl pot
Fuel pump
Fuel pressure regulator
Fuel rail and lines
Coolant/air temperature sensors
Crank pulley
MS2 ECU
Wideband lambda sensor/controller + AFR gauge
Exhaust blanking/lambda sensor plate

Ignition:

Coilpack/coils
Supressor
Ignitor/module