Slip yoke question

We have a winner! I found the gentleman I bought the yoke from and it turns out that it is from a newer van with a 518. Superdart you hit the nail on the head. Thanks again for everyones ideas.

It's not a newer style yoke is it?

As I understand it, a 727 yoke will fit the AODs (518/46/47/48/45 & 545RFE) but the AOD yokes won't properly fit the 727.