We’re doing the M-tuned coolant reroute so we also decided to delete all the small coolant hoses and plug all the respective passageways. And since we were doing the timing belt anyways, we decided to plug the front coolant passage where the stock thermostat housing normally resides.

Rear small water outlet plugged and capped

 

Stock oil cooler lines deleted

 

Front view

 

Plug for mixing manifold