Small block water pump oddness

A friend bought a water pump gates 43030.

It has 3 ports by the bypass

And the gasket shape is different.

The applications say they are for the same engines

Thoughts?


Gates 43030
Screenshot_20231127-165922.png

Typical cast wp
Screenshot_20231127-165814.png


Gates 43030 gasket
Screenshot_20231127-190142-01.jpeg


Typical gasket

Screenshot_20231127-190238.png