I'll start- your heater. You will see that you have a smaller black hose (about 5/8" ID) running from the water pump to the intake manifold. There should be two hoses. One hose should run from the water pump to the larger outlet on the firewall and the other hose should run from the intake manifold to the smaller outlet in firewall. This will circulate hot water through your heater core so that it will work. WARNING! This heater "bypass" was done previously because the heater core is leaking and they didn't want to repair it! Do not reroute these hoses until you are ready to do all the repairs that are needed! Your engine bay is full bad modifications so proceed cautiously.
