I just purchased a new 3 core Radiator and I noticed when taking my old one out , that the connections to my Auto. were built in to the side tank, for cooling, Now my new tank has just pluged holes , my question is do the parts stores carry the male top screw in connectors my lower one was a 'quick Disconnect" ....and whould they have a screw in "quick disconect" male fitting...thanxs Guys