The car is still going strong. I did replace the original radiator as it was starting to look a bit tired and I felt the fan was kicking on a bit too often. So a new aluminium radiator (slightly more robust looking and a bit higher capacity than the original copper core) was $90 from a local parts store plus postage. The car was showing no sign of parasitic current leakage through the cooling system, so I did a cooling system flush and filled it with long life red coolant (Toyota long life).
At the same time I replaced the thermostat and the housing, which was showing some corrosion around the hose fitting. I also replaced the radiator mounts, as though they were still servicable, they were original and showing tiredness and wear. Keeps things nice and vibration free.
Still no breakdowns and it's now riding on a set of Yokohama C Drive2s; much nicer than the S Drives I had prior for punting around the Brisbane streets.
I'm considering replacing the rear water fitting for the water pump and the water pump itself, which I'm pretty sure are still original. There is a little sign of seepage from around the hose from the pump to this rear fitting, but it's not showing in the coolant level.
I'm amazed that the CVs are still original on this car and are showing no sign of clicking yet (knock on wood) given the age.
The only things that I think probably need looking at are the engine mounts; they're starting to transfer a bit more vibration than I'd like. Also the clutch is probably original and starting to need looking at replacing, as sometimes I think the tension plate is starting to lose its spring. Possibly the rear rotors are due for replacing as they're nearing their wear limits. Apart from those things, everything still works as it should.
Mine is a 1998 Toyota Corolla. GLX, the top spec. Done 309k. Original clutch and suspension. Drives still like it's done 50k. Apart from cambelts 3 times, an oil change every 8-10k and once having the gearbox oil replaced, we did nothing. Still passes VTNZ WOF without any warning. Needed a few odd things like tyres and bulbs, but nothing mechanical. We strongly believe we can cross a million and we will. The clutch is fairly worn and we will be lucky if we can get 30 more ks out of it, but it's great for being original.