Aug 16 - maybe this will help

I have some pics that I haven't taken before now.  They are the ones that complete the shape of the ducts in a way that forces more of the air into the radiators.  You still have to add baffles around what you have to make sure no recirculation goes on, but that's not going to be a real issue once I'm done with these.  I have some weather striping for the sides of the radiator itself and a small piece I'll add in to block the air on the front from being able to bypass the radiator and go to the rear of it.  Only at the very top is there an opportunity for that to happen and not a very large one.