I think I'll stick with O2 and cat. O2 sensor is not THAT expensive after all and I think I'll remove the cat for inspection. If it's plugged, Ill replace with a metallic one.
Thanks for all the great input. I see we are all thinking in a similar way.
Brake hoses on my car are a few years old - new teflon braided in stainless steel - Goodridge of UK. I check the alignment in the front 2 times a year and once a year for the whole chassis (the rear axle has some alignment of its own in this car).
I register every single tank. Whenever I can, I ride my bike, so my car mileage is little. I do a lot of driving in other cars. This one is mine - personal and I am saving it
When I do drive this car - the route is almost always the same. Hasn't changed in years - unfortunately.