TH400 to dana 300 adapter
I have an adapter for mating a th400 to a dana 300. The part number from advance adapter is AA711164. I think it can be used with a 2wd or 4wd transmission, but you would have to double check with advance because I don't have a TH400 on hand to check fitment. I am asking $125 for the adapter. I was not able to upload pics to this post, but can email them to you.