Well, I got
the Spirit 750 air cleaner on. It's a little bulky for my right
leg, but it does not get in the way.

I used a
3/8" X 4" bolt and put the head behind the rear cylinder cover.

I then cut
off the back of the air cleaner that wasn't part of the mounting
for the chrome (excess plastic that nobody needs) with a hacksaw.

I then used
a 1/4" bolt with washers, and sandwiched the gas tank lip and the
lip of the air cleaner for tightness.


I hit about
every bump in the road, and didn't have any loosening with the
cleaner.