HEY! Leave me alone! My clothes are clean but my back is a mess from the long hours of ironing. That propaganda about the extra three vanes and the "tub is the agitator" don't help the dreadful tangling one bit!
I've been surprised that the speed changers are as durable as they've turned out to be - mine needs some adjustment but when I changed the oil a couple of years ago, what came out was clean and nearly perfect after all those years.
The original boot for these are all but non-existent now and even if you did find one, it probably would be pretty dried out and brittle. I used the later, gray boot on mine and it worked just fine. It may not look like the original but when the machine is running, you can't really tell the difference.