Power steering pumps/pulleys??

I lost my power steering pump while my car was apart.. 67 R/T convertible with the original 440.

The "hemi pulley" thread got me thinking about this again..

I have purchased 2 or 3 pumps and none of the belts line up correctly..

My questions are:
Are the big block power steering pumps different than the small blocks ( I know the brackets are)
Or are there a bunch of different pulleys being used.. any help??

Is yours either one of these?

don't forget the GM Saginaw pump,long skinny neck..

I believe I have both the TRW and the Fed pump. Not sure which I installed in the car, but it came off of a 67 318 ( using big block brackets).. I have a pic of the pump on the motor( after I pulled the motor from the car) and it had the large vertical return line ( coming out of the top of the pump.

Just wondering if anyone is in the know on these??