Ok I am upgrading my original post .
Originally I was concerned about the difficulty in contacting NWF .
I have had every call picked up since my post and seem to be batting a 100 , The answers are very courtious and knowledgable .
I have come to the conclusion that their "black box " may help get my truck on the road a bit quicker than building one myself . The cost of their Black box unit is not much more than a 203 , adapter and shafts . The assembled unit is shorter than the 203 /205 doubler. I will post on the installation but it will be awhile before the truck is mobile .
If any one else ends up using one of these puppies please let us know how it works .
Now I do not have to build my own