I have a 1987 Chevy Silverado Stepside with 350 with center bolt heads and Edlebrock manifold and carb. The previous owner placed the incorrect Edelbrock manifiold (without the rear cooling ports). During the re-install of the blown head gasket and new intake manfold; I'm lost to where the 3/4" heater core and 5/8 hose are supposed to go. If I am correct the 5/8" hose goes on the front of the intake manifold, but I'm lost to where the 3/4" goes. Maybe I'm just having a senior moment, but any help to jump start my brain is appreciated.