Well, the time challenge has been met, successfully!
Almost three decades and a half of continous ownership of my Subie, all of them running with this carbureted EA82 which is the original engine, having almost everything original inside it; and these last ten years, the engine has been running with the same timin' belts, coverless!
However, my beloved "BumbleBeast" has not reached the 100,000 kilometers' goal with the same timin' belts, yet; thus means that the mileage challenge hasn't been met... So, I decided that I'll let this old timin' kit to stay there, working for few months more; I'll report here as soon as anything new happens regarding the subject; meanwhile I must better find a brand new timin' kit...
Kind greetings from Honduras.