my problem is I dont have a port in the front of the intake manifold. The only heater hose locations I have are 2 at the back intake, and 2 on the water pump.One hose line goes to the water pump and one to the front intake manifold. That is how you need to hook up for your heater. What I think Don added was a fix to help with extra cooling for the heads themselves. And that would be from the rear intake ports to the thermostat housing. And you may or may not have a housing that has a port to do this. I do not have a heater only, but if it's like the VA system the top core outlet would go to the manifold and bottom to the water pump. Get yourself a AIM manual. It should show hose routing.