Heater Hose Nipple Size!

All, in the picture on the right you see what comes in a 70-74 small block heater hose nipple kit. It is 1/2 inch to 1/2 inch. However, the one on the left is the original one to the engine, which is a 73 340 by the way. It is 1/2 inch to 5/8 inch. It is from the original manifold that came on the engine from 73. I called the place I ordered it and they said that is what they are showing for a 70-74 small block. Well, it is obviously not correct. Has anyone else run into this and do you know where I can get the correct one? Keep in mind I would rather find what is in the picture as opposed to a Mr. Gasket or Spectre brand that uses a wrench to put it in place. I am putting this back to original appearance as close as possible. Any help would be greatly appreciated. View attachment 1715649085


If you want original style, look here:

Mancini Racing Small Block Heater Hose Nipple Kit