When my heater core went out 5 years ago the guy who bypassed it cut the bottom hose which is the hose that has 3 ends on it. It goes to the throttlebody the heater valve and the block. I am so mad that the guy cut the hose cause it is going to be such a pain to the new one in. it goes under the intake manifold and under the throttlebody. Not one of the fun jobs. Also found that my alternator mount bushings are shot. anyone done those?