Breather box on fan shroud?

Maybe on the backside of the shroud.

Never a "fan" of mounting to the shroud. Things tend to rattle loose when mounted to the shroud.

The breather box can be mounted level with the top of the shroud centered between the deck lid hinges with the box top up for easy removal, the hoses are ran between the shroud and the bulkhead. 

Agree, nut certs, self tapping hardware etc will just rattle loos,  the only way  I would mount anything to the shroud is with the shroud removed use pass through bolts with Nyloc nuts or Loc Tite.

Good stuff. Thanks all!!! 

you might consider a tower mount breather box that mounts to the oil filler stand.

Here's one that CB sells:   http://www.cbperformance.com/product-p/1771.htm

I had a CSP tower mounted breather box on my IM.

I have the CB breather box and it's almost OK.  Looks and works great, but there is a custom-formed gasket for the cover that will leak after a while.  I trashed their gasket and just shoot my own with black RTV - seems to work fine for 2-3 years and then needs replacing - about the same interval as the official CB gaskets (which are the same stuff shot into a mold for $7 bucks).  I use a neoprene O-ring on the breather-to-alt-tower connection with good results.

You'll also need the special "Gland Nut Tool" from CB to get it on there:

http://www.cbperformance.com/product-p/6509.htm

The only breather box on the generator tower worth using is a Gene Berg or CSP and the other option is mounting it up high on the firewall.

This is on my CMC.  Bolt on breather are 10 mm and easily accessed for removal.  Close to what the Dr. ordered.

Anthony posted:

The only breather box on the generator tower worth using is a Gene Berg or CSP and the other option is mounting it up high on the firewall.

BERG... well worth the cost.

Had it up high on the firewall but made it hard to get to (not that it would be that often). Putting it behind the shroud with through bolts as suggested.  Lots of room. 

Thanks again everyone!

Be sure your not blocking the inlet to the fan or restricting the air flow.