First thing I thought when I saw it was "That engine is in backwards."
Since I cleaned pounds of old oil/grease/grass clippings out of my shroud and cooling fins, that mounting makes a lot of sense.
I bet you can actually take the flywheel cover off to access the mag without pulling the motor and driveshaft too.... I was thinking of cutting my cover in half and converting it to a two piece bolt together.
I found this tonight[this morning] on ebay ,instantly reminded me of this thread,take a seat before checking it out..Is it gold paint you think,or gold plate........check out that price