My 303 has the correct fuel pump from the 56 Chrysler/ DeSoto with the glass sight bowl on the bottom. Don't forget, the 303 is a 56 Chrysler/DeSoto engine from Canada. It is not a US small block Plymouth engine. Some of the 56 Plymouth engine parts don't fit. I still see these glass bowl pumps around on ebay etc. and you should be able to find one.