My 1864 has the larger PTO pulley. The 451 blower is designated for use with it, so it should not be a problem with wear and tear.
Have you thought of adding a cab to your tractor? After a couple seasons of eating snow, you probably will. They are hard to find for the cyclops series.
The Sims cab looks and fits best, however I have seen many universal cabs adapted to fit. Some tractor owners go to the trouble of building cabs for their snow rigs to make it a little more pleasant to clear the snow.
I recently sold my cab tractor with a snowblower (of a different color) in favor of using a compact tractor with a blade. Being retired, I can resist the urge to get out there to clear snow as it accumulates. I simply wait until things calm down and then go out to do snow duty. Not so intense...more enjoyable!