Offenhauser 5041 in later year ‘75 /6
Get a simple one like this universal type (Ford and slant six) and make a flange for it with 2 holes, one goes to exhaust manifold and one goes to carb balance tube. The EGR valve will open when needed (part throttle) and allow inert exhaust gasses into the intake manifold, cooling the cumbustion chamber temperature (less O2 to burn)thereby reducing NOx and CO2 emissions. Mot mandatory unless your in a smog check state, usually deleted because the EGR valve goes bad and people dont know how insignificant the performance loss is compared to what it does to clean up your exhaust.
