My dang corvette heater coil is bad . So I want to make a temporary bypass I guess . Till I can get the parts I need. What is the best way to join the hoses ? It seems one is 3/4 " and one is 1/2" ...? Guessing Should I go to store and find pluming .? PVC or copper ? I'm not a plumer LOL Or is there some sort of pre made connector at an auto parts store for such fix?