I am trying to figure out the routing of the heater hoses. The issue is the clamping of the hoses to the RH inner fender. There are two small raised ribs on the inner fender about 1 ½” long and 1/8” wide. Both are vertical. My guess is that the double-hose clamp is next to the upper one for six-cylinder engines because the voltage regulator is on the firewall and, therefore, not in the way of the clamp and hoses. In contrast, for trucks with the eight-cylinder engine I suspect the clamp goes next to the lower rib because the hoses would have to go around the VR because the VR is about 2” forward of the upper rib.
