Gearbox bearing, cluch has worn out at 80,000 miles.
Amazing performance for a 1.6-litre car, but the stiff suspension, lack of power steering ('88 models didn't have PAS), and razor-sharp throttle response can make town driving a pain. Noisy on the motorway too. My engine only takes 4-star leaded petrol too which (in Ireland anyway) is over 20% more expensive than unleaded.
Your car should run fine on unleaded, may need to alter the timing, but other than that there's no reason to run on leaded.