Thanks for the info. I didn't notice any tag by the brake, but then I wasn't exactly looking for it there either. 

I didn't realize that Oliver offered a retro kit for the breather. That works for me.  I intended to leave the breather above the hood line anyway. It'll be one less hole to patch and I wouldn't have to rework the breather.   I do plan to smooth out the circle and use a large rubber grommet (for fuel tank hole or similiar) to dress it up. I might even swap out the plain breather cap for a fancy air cleaner with bowl. 

I'll have to post up a picture of the tractor when I get it home.