i had the same problem i just went to the hardware and got a 1/2 inch plumbing tee and
two 3/4 inch long nipples and spliced it in the heater hose the third hole in the tee is for the sensor
i have a 1973 dodge dart 225 slant with a offenhauser 2x1 intake
ersos 270 cam split exhaust manifold /dual exhaust . i noticed that
there is oil leaking out of the drivers side in front of the muffler
cant figure out where its coming from HELP!