Has anyone ever used a thermostat spacer between the upper and lower housings of an in-line? These spacers are made sor small block engines and have the same holes, plus they are drilled and tapped on the side. Seems that would be an excellent source of water or a return for a water heated intake such as an Edmunds. I have a lower thermostat housing, with an outlet on each side, from a 302 GMC. At first thought, it would be easier to plumb from the lower housing, through the intake and return above the thermostat to the spacer. Any thoughts?