Based on what you have posted, that is correct. That housing has an internal bypass.

Awesome thanks!

Awesome thanks. Does it seem like it would create enough pressure to burst that hose with those outlets kinked off?

Heat, pressure and old hose? It could pop it...

I hope. We will see after I get what I need.

ONE more question, I ordered the Sierra ss thermostat housing like I pictured. It only came with the blue plastic thermostat sleeve. What are the differences with the white or blue one? Can I just use the blue sleeve?

Just use the blue one. It should be fine.

What connects to the top water 90* water inlet/outlet ????

Water comes in from port, pumps to starboard side then out the smaller outlets. Is that what your asking?

The top 90* inlet/outlet on the manifold riser???