[Rosieuk]

Having waited for a year less a couple of weeks to get the Hyundai back is gave up in march and bought a Wolseley 18/85 landcrab.
It's a 1.8 4 speed manual that looks like what you'd get if an obese Dalek mated with a chrome bumper MGBGT. It used the MGB engine with a siamesed port head and either a single or dual HS6 carb.

Eco upgrades so far:

LEDs in indicator circuit (except telltales & front bulbs)
LEDs in dashboard (which can be switched on or off as a feature of the car).
LED headlights - 35-45w combined - previous sealed beams 100-110w combined.
Ivory over green repaint (roof & boot lid and surrounds) reducing interior temperature by 20%
Falken Sincera 165/70/14 tyres.

With Hydrolastic suspension it's not possible, nor desirable, to raise tyre pressures.

MPG is about 22/26/34 at the moment. This will improve as the tyres wear in.