[Jeff Chambers]

Those black tubes running along the lower manifold on the passenger's side are your heater core hoses. You can pull them out if you don't want heat any more. The one that screws in to the lower intake can come out and the hole plugged with an NPT plug. The one going to the water pump can be pulled off too then. The hose stub on the water pump can be removed and the water pump body tapped for an NPT plug as well. Some people will just put a large rubber vacuum cap over the WP stub, but I've seen those crack and break over time so be very careful if you go this route. When you pull the AC condenser box from behind the dashboard, the two firewall fittings will come out with the box. You can make a nice aluminum block-off plate to cover the hole in the firewall and rivet it in place.