Here’s what I think I’ll do on this intake.
Took it all apart today and wow, this may be a bit of a challenge trying to use most of the OE tube. I could run a new line complete but there are some design advantages in keeping the OE tube from the CVT case.. plus it is not in the cover’s way when I need to remove it:

So…right now, with the limited room there, my thinking is to only replace the intake rubber piece:


With this 6”x6”x4” project box w/lid. Its 4"s deep and the void tapers from 3.5 to 5" in that area so I think I can make it work.

As the end of the OE tube is about 3” I will tap a double male 3” nipple on the OE pipe side and use this filter on the inside which has the correct for the box and the 3” nipple:
http://www.ebay.com/itm/321713330583?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AITI will then use heat and adjust the bend of the OE pipe to a true 45 degree angle and install this silicone 45..adjusted..between the box and pipe. Length adjusted of course:
http://www.ebay.com/itm/400435847562?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AITThen install the box straight unlike the OE end and flush with the inside surface using pre-mounted brackets on the box and push-pins and cover any part of the old intake hole that remains with black plastic. As for the box cover, I will lay-out several rows of either ½” or 1” holes and drill them in. I do have some black water resistant Outerwears prefilter material I may affix to the inside of the cover just for some extra protection.
Anyone see anything wrong with this idea?
One side thought. While doing this..just maybe.. instead of just a 3” nipple through the box to attach the filter and the 45, I could install this 3” blower instead…or I could do it later if necessary.
http://www.ebay.com/itm/MARINE-3-ELECTRIC-IN-LINE-BLOWER-FOR-BOATS-RVs-12V-ATTWOOD-Turbo-3000-/291645489282?hash=item43e76d0082:g:hqQAAOSwo3pWexPk&vxp=mtr I have an adjustable temp. switch I can place on the CVT exhaust and have it be automatic when needed.