Power Steering Pump Fitment Issue

[Frank Tate]

So, I have a late 50's Ford PS pump that I picked up and rebuilt in anticipation of installing it on my 55.  According to everything I have read, the only issue would be the mounting brackets as all the Eaton pumps were generally the same.  I got a rebuild kit and have rebuilt it.  Bought the necessary Tbird brackets and went to install it.  It seems that my pumps' casting interferes with the cast mounting bracket on the engine.  When I looked up a replacement pump on ebay, I see one that looks like mine with all the mounting brackets and not clearance problem.  Are there different Tbird Yblock brackets???

 

 

This is the ebay pic

 

Here is my pump

 

Here is the interference issue

 

 

As I hope you can see, the casting ear (for lack of a better term) to the left of the top bolt is hitting the bracket mounted to the engine block.  The black front mounting plate bracket is a brand new part and I hope it is made to the correct dimensions, but looking at the ebay pic, that pump has an ear also, but all the brackets fit!!!  And when I mount just my bracket to the engine mount, everything lines up, but I can't mount the pump.

 

I don't want to grind the ear off, but I am running out of ideas here.  Can anyone provide a suggestion???

 

Many thanks!

Frank