power steering help

..............1st 2 r small block pumps, or at least the brackets are small block........I have changed brackets from big to small or small to big block b4 ......the pump was tilted at a different angle side to side but the pulleys still lined up......also the depth on the 2 bb water pump housings where the pump bolts on is narrower on the passenger side inlet housing....u should have a TRW or a Federal pump instead of a Saginaw with the drivers side inlet.....kim......