I'm rebuilding a '67 FE 390 that has been in my 1957 T'bird for umpteen years. New Edlebrock performer has hole for waterpump bypas. So what part do I need to stick into the hole? I'ts not threaded so I assume a press fit is required, but I do not know what kind of fitting it is or where to get one. Also the temperature sensor from old manifoldis way smaller than the tapped hole in new manifold. Can anyone give an OLD hot rodder some helpful advice?? Thanks.