I found a thermostat housing that has (3) holes,,one goes to the heater, 1 for the temp gauge, and the third runs the heat plate, then you can eliminate any tee's up front,,I found them on lots of late 70'S vans and trucks in the junk yard,,some have a fitting for the heater hose,, others have a nipple cast to them,,,the fitting one is iron, the casted one is alum,,
